प्रिज्म डिवेलपर की गाइड - पार्ट 9, लूज़ली लिंक्ड कंपोनेंट्स के बीच इंटरऑपरेबिलिटी

सामग्री की तालिका

1. परिचय
2. प्रारम्भिक प्रिज्म अनुप्रयोग
3. घटकों के बीच निर्भरता का प्रबंधन
4. मॉड्यूलर अनुप्रयोग विकास
5. एमवीवीएम पैटर्न को लागू करना
6. उन्नत MVVM परिदृश्य
7. उपयोगकर्ता इंटरफ़ेस निर्माण
   
   1. उपयोगकर्ता इंटरफ़ेस दिशानिर्देश
8. नेविगेशन
   1. दृश्य-आधारित नेविगेशन
9. शिथिल युग्मित घटकों के बीच पारस्परिक क्रिया

एक बड़े और जटिल अनुप्रयोग का निर्माण करते समय, सामान्य दृष्टिकोण कार्यक्षमता को अलग मॉड्यूल में अलग करना है। इन मॉड्यूल के बीच स्थिर लिंक की संख्या को कम करना भी उचित है। इसके लिए धन्यवाद, मॉड्यूल स्वतंत्र रूप से विकसित, परीक्षण, तैनात और अद्यतन किए जा सकते हैं। यह सब मॉड्यूल के लिए एक दूसरे के साथ बातचीत करने की आवश्यकता की ओर जाता है।

मॉड्यूल के बीच बातचीत के एक मॉडल का निर्माण करते समय, आपको यह जानने के लिए दृष्टिकोणों के बीच के अंतर को जानने की जरूरत है कि कौन से एक विशिष्ट परिदृश्य में आवेदन करना है। प्रिज्म लाइब्रेरी निम्नलिखित दृष्टिकोण प्रदान करती है:

• कमांड्स का उपयोग ( सॉल्यूशन कमांडिंग )। उपयोगकर्ता क्रियाओं का जवाब देने के लिए उपयोग करें।
• क्षेत्र का संदर्भ ( क्षेत्र संदर्भ )। मेजबान नियंत्रण से क्षेत्र में विचारों को संदर्भ संबंधी जानकारी देने के लिए उपयोग करें। यह दृष्टिकोण कुछ हद तक DataContext समान है, लेकिन इस पर भरोसा नहीं करता है।
• साझा सेवाएँ आप सेवा पर विधि को कॉल कर सकते हैं, जो बदले में, एक घटना उत्पन्न करेगा जो प्राप्तकर्ता सदस्यता ले सकते हैं। अन्य सभी दृष्टिकोण लागू नहीं हैं, तो इस दृष्टिकोण का उपयोग करें।
• इवेंट एग्रीगेशन संदेश के लिए सीधी प्रतिक्रिया की अपेक्षा के अभाव में प्रस्तुति मॉडल, प्रस्तुतकर्ता, या नियंत्रकों के बीच संदेश स्थानांतरित करने के लिए।

आदेशों का उपयोग ( समाधान कमांडिंग )

यदि आपको उपयोगकर्ता के इशारों का जवाब देने की आवश्यकता है, जैसे कि बटन पर क्लिक करना, और यदि आप एप्लिकेशन लॉजिक के आधार पर नियंत्रण की उपलब्धता को नियंत्रित करना चाहते हैं, तो कमांड का उपयोग करें।

WPF रूटेड कमांड्स ( RoutedCommand ) प्रदान करता है जो कि एक कंट्रोल को जोड़ने के लिए अच्छी तरह से अनुकूल होते हैं जो कमांड, जैसे बटन या एक मेनू आइटम, वर्तमान आइटम से संबंधित कमांड हैंडलर के साथ कीबोर्ड फोकस होता है।

हालाँकि, समग्र अनुप्रयोग परिदृश्यों में, घटना हैंडलर अक्सर एक प्रस्तुति मॉडल होता है, या तो दृश्य पेड़ में किसी भी संबद्ध तत्वों के बिना, या जिसमें फोकस नहीं होता है। इस तरह के परिदृश्यों का समर्थन करने के लिए, प्रिज़्म DelegateCommand क्लास प्रदान करता है, जो प्रतिनिधि को कमांड के निष्पादित होने पर कॉल करने की अनुमति देता है, और CompositeCommand क्लास, जो कई कमांडों को एक में संयोजित करने की अनुमति देता है। ये कक्षाएं बिल्ट-इन RoutedCommand क्लास से अलग हैं, जो विजुअल ट्री के ऊपर और नीचे प्रोसेसिंग करते हैं। वे आपको दृश्य पेड़ में एक कमांड शुरू करने, और इसे उच्च स्तर पर संसाधित करने की अनुमति देते हैं।

CompositeCommand क्लास ICommand इंटरफ़ेस को लागू करता है, इसलिए इसे नियंत्रित करने के लिए बाध्य किया जा सकता है। CompositeCommands वर्ग कई चाइल्ड कमांड के साथ जुड़ा हो सकता है। CompositeCommand को निष्पादित करते समय, बाल आदेशों को भी निष्पादित किया जाएगा।

CompositeCommand वर्ग सक्रियण का समर्थन करता है। जब CanExecuteChanged इवेंट CanExecuteChanged , तो यह स्वयं इस ईवेंट को जनरेट करता है। उसके बाद, संबंधित नियंत्रण CanExecute पर CanExecute विधि को कॉल करता है। CanExecute अपने CanExecute पद्धति को कॉल करके सभी बाल आदेशों का सर्वेक्षण करते CanExecute । यदि कोई कमांड false आती false , तो CompositeCommand भी false लौटता false , इस प्रकार नियंत्रण को निष्क्रिय कर देता है।

प्रिज्म लाइब्रेरी-आधारित एप्लिकेशन में शेल में परिभाषित वैश्विक CompositeCommand कमांड हो सकते हैं जो पूरे एप्लिकेशन में समझ में आते हैं, जैसे कि सेव , सेव ऑल और कैंसिल । मॉड्यूल इन वैश्विक टीमों में अपनी स्थानीय टीमों को पंजीकृत कर सकते हैं, इस प्रकार उनके निष्पादन में भाग लेते हैं।

WPF रूट किए गए ईवेंट ( रूट किए गए ईवेंट ) और रूट किए गए कमांड ( रूट किए गए कमांड ) पर ध्यान दें।
रूट किए गए ईवेंट सामान्य घटनाओं से भिन्न होते हैं, जिसमें उन्हें तत्व ट्री के विभिन्न स्थानों में स्थित कई हैंडलर द्वारा संसाधित किया जा सकता है। WPF रूड इवेंट्स दृश्य ट्री में आइटम के बीच संदेश ले जाता है। वे तत्व जो दृश्य ट्री में नहीं हैं वे इन आदेशों को संसाधित नहीं कर सकते हैं। रूट किए गए ईवेंट का उपयोग विज़ुअल ट्री के तत्वों के बीच संचार के लिए किया जा सकता है, क्योंकि मार्ग में प्रत्येक तत्व के लिए इवेंट डेटा संग्रहीत किया जाता है। एक तत्व इस डेटा में कुछ बदल सकता है, और यह परिवर्तन मार्ग में अगले तत्व के लिए उपलब्ध होगा।

आप निम्न मामलों में WPF रूट की गई घटनाओं का उपयोग कर सकते हैं: एक सामान्य रूट तत्व में एक सामान्य हैंडलर सेट करना, या अपना स्वयं का नियंत्रण वर्ग बनाते समय।

एक प्रतिनिधि आदेश बनाना

एक प्रतिनिधि कमांड बनाने के लिए, व्यू मॉडल के निर्माता के प्रकार DelegateCommand एक क्षेत्र को बनाना और आरंभ करना आवश्यक है और इसे ICommand प्रकार की संपत्ति के माध्यम से सुलभ बनाना है।

 public class ArticleViewModel : NotificationObject { private readonly ICommand _showArticleListCommand; public ArticleViewModel(INewsFeedService newsFeedService, IRegionManager regionManager, IEventAggregator eventAggregator) { _showArticleListCommand = new DelegateCommand(this.ShowArticleList); } public ICommand ShowArticleListCommand { get { return _showArticleListCommand; } } } 

नोट।
शायद ही कभी इस्तेमाल किए जाने वाले आदेशों के लिए, यह अक्सर "आलसी" करने के लिए समझ में आता है, सीधे संपत्ति की विधि में एक DelegateCommand बनाएं।

 public class ArticleViewModel : NotificationObject { private readonly ICommand _showArticleListCommand; public ArticleViewModel(INewsFeedService newsFeedService, IRegionManager regionManager, IEventAggregator eventAggregator) { } public ICommand ShowArticleListCommand { get { return _showArticleListCommand ?? ( _showArticleListCommand = new DelegateCommand(this.ShowArticleList) ); } } } 

कम्पोजिट कमांड बनाना

कम्पोज़िट कमांड बनाने के लिए, व्यू मॉडल के कंस्ट्रक्टर में टाइप CompositeCommand एक क्षेत्र को बनाना और आरंभ करना आवश्यक है और इसे ICommand की संपत्ति के माध्यम से सुलभ बनाना है।

 public class MyViewModel : NotificationObject { private readonly CompositeCommand _saveAllCommand; public ArticleViewModel(INewsFeedService newsFeedService, IRegionManager regionManager, IEventAggregator eventAggregator) { _saveAllCommand = new CompositeCommand(); _saveAllCommand.RegisterCommand(new SaveProductsCommand()); _saveAllCommand.RegisterCommand(new SaveOrdersCommand()); } public ICommand SaveAllCommand { get { return _saveAllCommand; } } } 

विश्व स्तर पर सुलभ टीम बनाना

आमतौर पर, विश्व स्तर पर सुलभ कमांड बनाने के लिए, DelegateCommand या CompositeCommand का एक उदाहरण बनाया जाता है और एक स्थिर वर्ग के माध्यम से उपलब्ध कराया जाता है।

 public static class GlobalCommands { public static CompositeCommand MyCompositeCommand = new CompositeCommand(); } 

फिर, मॉड्यूल बच्चे की टीमों को वैश्विक टीम के साथ जोड़ता है।

 GlobalCommands.MyCompositeCommand.RegisterCommand(command1); GlobalCommands.MyCompositeCommand.RegisterCommand(command2); 

नोट।
कोड की परीक्षण क्षमता में सुधार करने के लिए, आप मध्यस्थता वर्ग का उपयोग विश्व स्तर पर सुलभ कमांड का उपयोग करने के लिए कर सकते हैं और इसे परीक्षणों में नकली कर सकते हैं।

विश्व स्तर पर सुलभ टीमों के लिए लिंक

निम्न कोड उदाहरण दिखाता है कि WPF में वैश्विक कमांड के बटन को कैसे बांधें।

 <Button Name="MyCompositeCommandButton" Command="{x:Static local:GlobalCommands.MyCompositeCommand}" Content="Execute My Composite Command"> </Button> 

सिल्वरलाइट x:static लिए समर्थन प्रदान नहीं करता है x:static , इसलिए सिल्वरलाइट में एक बटन को बांधने के लिए, आपको इन चरणों का पालन करना चाहिए:

1. दृश्य मॉडल में, आपको स्थिर वर्ग में निर्दिष्ट कमांड प्राप्त करने के लिए एक public संपत्ति बनानी होगी।
   

    public ICommand MyCompositeCommand { get { return GlobalCommands.MyCompositeCommand; } } 

   
   
2. आमतौर पर, दृश्य मॉडल एक DataContext (जो एक अलग कोड फ़ाइल में किया जाता है) के माध्यम से विचारों से जुड़ा होता है।
   

    view.DataContext = model; 

   
   
3. सुनिश्चित करें कि निम्न XML नाम स्थान रूट तत्व में जोड़ा गया है।
   

    xmlns:prism="clr-namespace:Microsoft.Practices.Prism.Commands;assembly=Microsoft.Practices.Prism" 

   
   
4. संलग्न Click.Command संपत्ति का उपयोग करके कमांड को बटन को Click.Command ।
   

    <Button Name="MyCommandButton" prism:Click.Command="{Binding MyCompositeCommand}" Content="Execute MyCommand"/> </Button> 

   
   

नोट।
एक अन्य तरीका है Application.Resources में संसाधन के रूप में कमांड को सहेजना। ApplicationResl फ़ाइल। स्रोत स्रोत। उसके बाद, दृश्य में, इसे बांधें।

 <Button Name="MyCommandButton" prism:Click.Command="{Binding MyCompositeCommand, Source={StaticResource GlobalCommands}} Content="Execute MyCommand"/> </Button> 

क्षेत्र का संदर्भ

कई परिदृश्य हैं जब किसी क्षेत्र (मेजबान) से जुड़े दृश्य और उस क्षेत्र में स्थित दृश्यों के बीच प्रासंगिक जानकारी को स्थानांतरित करना आवश्यक हो सकता है। उदाहरण के लिए, मास्टर-डिटेल स्क्रिप्ट में, दृश्य इकाई और उस क्षेत्र को प्रदर्शित करता है जिसमें इस इकाई पर अतिरिक्त जानकारी प्रदर्शित होती है। प्रिज्म एक क्षेत्र में एक मेजबान के बीच एक वस्तु को स्थानांतरित करने के लिए रीजन RegionContext नामक एक अवधारणा का उपयोग करता है और उस क्षेत्र में लोड किए गए विचारों के अनुसार, जैसा कि नीचे चित्र में दिखाया गया है।



परिदृश्य के आधार पर, आप जानकारी के एक टुकड़े (जैसे पहचानकर्ता) और संपूर्ण मॉडल को धोखा दे सकते हैं। इस दृश्य से एक RegionContext प्राप्त हो सकता है और फिर एक परिवर्तन अधिसूचना की प्रतीक्षा कर सकते हैं। एक दृश्य RegionContext का मान भी बदल सकता है। RegionContext साथ आने और सेट करने के कई तरीके हैं:

• XAML का उपयोग करके RegionContext क्षेत्र का RegionContext क्षेत्र-समूह सेट करना।
• कोड में क्षेत्र RegionContext क्षेत्र-निर्धारण को सेट करना।
• इस क्षेत्र के अंदर एक दृश्य से एक RegionContext प्राप्त करना।

नोट।
वर्तमान में, प्रिज्म एक क्षेत्र के भीतर एक दृश्य से एक RegionContext प्राप्त करने का समर्थन करता है, यदि वह दृश्य एक DependencyObject वंशज है। यदि आपका दृश्य एक DependencyObject नहीं है (उदाहरण के लिए, यदि आप डेटा टेम्प्लेट का उपयोग करते हैं और एक क्षेत्र में सीधे एक दृश्य मॉडल जोड़ते हैं), तो ऑब्जेक्ट्स देखने के लिए RegionBehavior पास करने के लिए अपना स्वयं का RegionBehavior क्लास बनाने पर विचार करें।

DataContext प्रॉपर्टी पर ध्यान दें।
एक डेटा संदर्भ एक अवधारणा है जो नियंत्रण को अपने मूल तत्वों से बंधन के लिए डेटा स्रोत जानकारी प्राप्त करने की अनुमति देता है। बाल तत्व स्वचालित रूप से DataContext को उनके मूल तत्वों से प्राप्त करते हैं। डेटा दृश्य वृक्ष को फैलाता है।

किसी मॉडल को सिल्वरलाइट में देखने के लिए मॉडल को बाइंड करने का सबसे अच्छा तरीका DataContext का उपयोग करना DataContext । इसीलिए, ज्यादातर परिदृश्यों में, डेटा मॉडल का उपयोग दृश्य मॉडल को संग्रहीत करने के लिए किया जाता है। इस कारण, यह शिथिल युग्मित विचारों के बीच एक संचार तंत्र के रूप में एक DataContext का उपयोग करने के लिए अनुशंसित नहीं है।

साझा सेवाएँ

इंटरमॉड्यूलर इंटरैक्शन को लागू करने का एक अन्य तरीका साझा सेवाओं का उपयोग करना है। मॉड्यूल लोड करते समय, यह DI कंटेनर में अपनी सेवाएं जोड़ सकता है। आमतौर पर, सेवाओं को कंटेनर से आम इंटरफेस के माध्यम से पंजीकृत और अनुरोध किया जाता है, जो एक अलग विधानसभा में स्थित हैं। यह मॉड्यूल को अन्य मॉड्यूल द्वारा प्रदान की गई सेवाओं का उपयोग करने की अनुमति देता है, इन मॉड्यूल के स्थिर लिंक की आवश्यकता के बिना। सेवा उदाहरण सभी मॉड्यूल के लिए सामान्य हैं, इसलिए आप डेटा का आदान-प्रदान कर सकते हैं और उनके बीच संदेश भेज सकते हैं।

स्टॉक ट्रेडर आरआई में , मार्केट मॉड्यूल IMarketFeedService कार्यान्वयन प्रदान करता है। स्थिति मॉड्यूल एप्लिकेशन शेल में परिभाषित DI कंटेनर का उपयोग करके इस सेवा का उपभोग करता है। IMarketFeedService अन्य मॉड्यूल द्वारा उपयोग के लिए अभिप्रेत है, इसलिए यह StockTraderRI.Infrastructure की सामान्य सभा में स्थित है , लेकिन इसका विशिष्ट कार्यान्वयन सार्वजनिक रूप से उपलब्ध नहीं होना चाहिए, इसलिए इसे मार्केट मॉड्यूल में परिभाषित किया गया है और इसे अन्य मॉड्यूलों से स्वतंत्र रूप से जोड़ा जा सकता है।

यह देखने के लिए कि ये सेवाएँ MEF कंटेनर को कैसे निर्यात की जाती हैं, MarketFeedService.cs और MarketHistoryService.cs फ़ाइलें देखें । स्थिति मॉड्यूल के IMarketFeedService को कंस्ट्रक्टर में निर्भरता इंजेक्शन के माध्यम से IMarketFeedService सेवा प्राप्त होती है।

 [Export(typeof(IMarketFeedService))] [PartCreationPolicy(CreationPolicy.Shared)] public class MarketFeedService : IMarketFeedService, IDisposable { ... } 

नोट।
कुछ DI कंटेनर आपको विशेषताओं का उपयोग करके निर्भरता दर्ज करने की अनुमति देते हैं, जैसा कि ऊपर दिए गए उदाहरण में दिखाया गया है। दूसरों को स्पष्ट पंजीकरण की आवश्यकता हो सकती है। ऐसे मामलों में, पंजीकरण आमतौर पर IModule.Initialize पद्धति में मॉड्यूल लोड करने के दौरान किया जाता है। अधिक जानकारी के लिए, भाग 4, " विकासशील मॉड्यूलर अनुप्रयोग " देखें।

इवेंट एग्रीगेशन

प्रिज्म पुस्तकालय एक अनुप्रयोग में शिथिल युग्मित घटकों के बीच अंतर के लिए एक तंत्र प्रदान करता है। यह तंत्र घटना एकत्रीकरण सेवा और प्रकाशक-सब्सक्राइबर टेम्पलेट पर आधारित है, जो प्रकाशकों और ग्राहकों को एक दूसरे से स्पष्ट लिंक के बिना बातचीत करने की अनुमति देता है।

EventAggregator मल्टीकास्ट प्रकाशन / सदस्यता कार्यक्षमता प्रदान करता है। इसका मतलब यह है कि इस कार्यक्रम को प्रकाशित करने वाले कई प्रकाशक हो सकते हैं, और कई ग्राहकों ने इस कार्यक्रम की सदस्यता ली है। कई मॉड्यूल के बीच घटनाओं को प्रकाशित करने के लिए एक EventAggregator का उपयोग करने पर विचार करें और नियंत्रक और प्रस्तुतकर्ता जैसे व्यावसायिक तर्क कोड के बीच संदेश भेजते समय।

इसका एक उदाहरण स्टॉक ट्रेडर आरआई है , जिसमें जब आप प्रोसेस ऑर्डर बटन पर क्लिक करते हैं, तो ऑर्डर प्रोसेसिंग शुरू होती है। इस मामले में, कई मॉड्यूल को पता होना चाहिए कि उनके सबमिशन को अपडेट करने के लिए ऑर्डर को संसाधित किया गया है।

प्रिज्म का उपयोग करके बनाई गई घटनाएं दृढ़ता से टाइप की जाती हैं। इसका मतलब है कि आप संकलन के समय टाइप चेकिंग का लाभ उठा सकते हैं। EventAggregator वर्ग ग्राहकों, या प्रकाशकों को, ईवेंट के प्रकार को निर्धारित करने के लिए एक विशेष EventBase खोज करने की अनुमति देता है। कई ग्राहक और प्रकाशक एक बार में इसका उपयोग कर सकते हैं, जैसा कि नीचे चित्रण में दिखाया गया है।

.NET फ्रेमवर्क में एक घटना नोट।
.NET फ्रेमवर्क में निर्मित घटना तंत्र का उपयोग करना घटकों के लिए एक दूसरे के साथ बातचीत करने का सबसे सरल और स्पष्ट तरीका है यदि ढीली युग्मन की आवश्यकता नहीं है। .NET फ्रेमवर्क में इवेंट पब्लिश-सब्सक्राइब पैटर्न को लागू करते हैं, लेकिन किसी ऑब्जेक्ट की घटना की सदस्यता के लिए, इस ऑब्जेक्ट के लिए एक सीधा संदर्भ की आवश्यकता होती है, जो कि समग्र अनुप्रयोगों में, अक्सर दूसरे मॉड्यूल में स्थित होता है। परिणाम एक दृढ़ता से जुड़ा हुआ डिजाइन है। इसलिए, .NET फ्रेमवर्क घटनाओं का उपयोग मॉड्यूल के भीतर संदेश के लिए किया जाना चाहिए, लेकिन उनके बीच नहीं।

यदि आप .NET फ्रेमवर्क घटनाओं का उपयोग करते हैं, तो आपको मेमोरी लीक को रोकने के लिए बहुत सावधानी बरतनी चाहिए, खासकर यदि आपके पास गैर-स्थिर या अल्पकालिक घटक हैं जो स्थिर या लंबे समय तक रहने वाली वस्तु की घटनाओं की सदस्यता लेते हैं। यदि ग्राहक सदस्यता से सदस्यता समाप्त नहीं करता है, तो उसके लिए लिंक प्रकाशक द्वारा रखा जाएगा, जो पहले एक को कचरा इकट्ठा करने से रोकेगा।

IEventAggregator इंटरफ़ेस

EventAggregator सेवा कंटेनर से IEventAggregator इंटरफ़ेस के माध्यम से EventAggregator की IEventAggregator है। ईवेंट एग्रीगेटर ईवेंट ऑब्जेक्ट का पता लगाने या बनाने और संग्रहीत करने के लिए जिम्मेदार है।

 public interface IEventAggregator { TEventType GetEvent<TEventType>() where TEventType : EventBase; } 

EventAggregator पहले अनुरोध पर एक इवेंट ऑब्जेक्ट बनाता है, अगर यह पहले से ही नहीं बनाया गया है। यह प्रकाशक, या ग्राहक को यह निर्धारित करने से मुक्त करता है कि कोई घटना उपलब्ध है या नहीं।

क्लास कम्पोजिटप्रेंटेशनईवेंट

प्रकाशकों को ग्राहकों से जोड़ने का असली काम कंपोजिटपर्सेंटेशन CompositePresentationEvent वर्ग द्वारा किया जाता है। यह प्रिज़्म लाइब्रेरी में शामिल EventBase क्लास का एकमात्र कार्यान्वयन है। यह ग्राहकों की एक सूची रखता है और इन ग्राहकों को भेजने वाली घटना को संभालता है।

CompositePresentationEvent वर्ग सामान्य है और पेलोड के प्रकार की परिभाषा की आवश्यकता है। यह प्रकाशकों और ग्राहकों को सफल ईवेंट हुकिंग के लिए सही हस्ताक्षर के साथ तरीके प्रदान करने में मदद करता है। निम्न कोड CompositePresentationEvent वर्ग की आंशिक परिभाषा दिखाता है।

 public class CompositePresentationEvent<TPayload> : EventBase { ... public SubscriptionToken Subscribe(Action<TPayload> action); public SubscriptionToken Subscribe(Action<TPayload> action, ThreadOption threadOption); public SubscriptionToken Subscribe(Action<TPayload> action, bool keepSubscriberReferenceAlive) public virtual SubscriptionToken Subscribe(Action<TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive); public virtual SubscriptionToken Subscribe(Action<TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate<TPayload> filter); public virtual void Publish(TPayload payload); public virtual void Unsubscribe(Action<TPayload> subscriber); public virtual bool Contains(Action<TPayload> subscriber) ... } 

ईवेंट बनाना और प्रकाशित करना

निम्न अनुभाग वर्णन करते हैं कि कैसे बनाएं, प्रकाशित करें, और IEventAggregator इंटरफ़ेस का उपयोग करके CompositePresentationEvent घटनाओं की सदस्यता लें।

घटना निर्माण

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . वर्ग CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . का CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .
• CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

 CompositePresentationEvent      ,   ,  . TPayLoad     .    ,       . 
 
  ,     TickerSymbolSelectedEvent  Stock Trader RI .    ,   .  ,    . 
 
 public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { } 
 . 
   ,     ,       .  Stock Trader RI ,      StockTraderRI.Infrastructure . 
 
 
   
          EventAggregator    Publish .   EventAggregator ,     ,    IEventAggregator   . 
 
  ,      TickerSymbolSelectedEvent . 
 
 this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0"); 
 
    
     ,      Subscribe  CompositePresentationEvent .      CompositePresentationEvents .       . 
 
            ,       UI.     ,      .    ,          .         ,   . 
 
        . 
 
 
    UI 
  ,      UI    .  WPF  Silverlight,   UI    UI. 
 
  ,      .       UI,     UI.      ,       UI.   ,      UI,   Dispatcher . 
 
 CompositePresentationEvent     ,        UI.      ,     . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); } 
  ThreadOption   : 
 
 PublisherThread .      .    . BackgroundThread .          .NET Framework. UIThread .      UI. 
 
    
         .   ,     filter .     System.Predicate    ,      ,  ,      . 
 
 ,    -,   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); 
 . 
 -   Silverlight,      ,         (      CompositePresentationEvent ).   -         ,          Silverlight.  ,     public ,    keepSubscriberReferenceAlive  true ,        (  ). 
 
 -   Silverlight,      public ,     ,  ,    (    ). 
 
 public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter); 
 . 
  Subscribe     Microsoft.Practices.Prism.Events.SubscriptionToken ,        .        ,  -,         ,    . 
 
 . 
          ,         .           . 
 
 
      ( Strong references ) 
        ,      , , ,  ,   .          . 
 
  , CompositePresentationEvent         .  ,  ,   CompositePresentationEvent ,      .                      . 
 
       ,   keepSubscriberReferenceAlive  Subscribe ,     . 
 
 FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId); 
  keepSubscriberReferenceAlive  bool : 
 
    true ,        ,          .    ,     .    false (    ,     ),       ,              .   ,      . 
 
   
   ,   ,  ,           .  ,   TickerSymbolSelectedEvent  ,  string ,   . 
 
 public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); } 
 
    
       ,    ,      ,   . 
 
    ,  ,  . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler); 
   ,  ,   .    Subscribe   . 
 
 FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken); 
 
   
       ,   "Weak References"  MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx . 

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .

CompositePresentationEvent , , . TPayLoad . , .

, TickerSymbolSelectedEvent Stock Trader RI . , . , .

public class TickerSymbolSelectedEvent : CompositePresentationEvent<string> { }
.
, , . Stock Trader RI , StockTraderRI.Infrastructure .



EventAggregator Publish . EventAggregator , , IEventAggregator .

, TickerSymbolSelectedEvent .

this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Publish("STOCK0");


, Subscribe CompositePresentationEvent . CompositePresentationEvents . .

, UI. , . , . , .

.


UI
, UI . WPF Silverlight, UI UI.

, . UI, UI. , UI. , UI, Dispatcher .

CompositePresentationEvent , UI. , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews, ThreadOption.UIThread); } public void ShowNews(string companySymbol) { this.articlePresentationModel.SetTickerSymbol(companySymbol); }
ThreadOption :

PublisherThread . . . BackgroundThread . .NET Framework. UIThread . UI.


. , filter . System.Predicate , , , .

, -, .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId);
.
- Silverlight, , ( CompositePresentationEvent ). - , Silverlight. , public , keepSubscriberReferenceAlive true , ( ).

- Silverlight, public , , , ( ).

public bool FundOrderFilter(FundOrder fundOrder){ return fundOrder.CustomerId == this.customerId; } ... FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, FundOrderFilter);
.
Subscribe Microsoft.Practices.Prism.Events.SubscriptionToken , . , -, , .

.
, . .


( Strong references )
, , , , , . .

, CompositePresentationEvent . , , CompositePresentationEvent , . .

, keepSubscriberReferenceAlive Subscribe , .

FundAddedEvent fundAddedEvent = eventAggregator.GetEvent<FundAddedEvent>(); bool keepSubscriberReferenceAlive = true; fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, keepSubscriberReferenceAlive, fundOrder => fundOrder.CustomerId == _customerId);
keepSubscriberReferenceAlive bool :

true , , . , . false ( , ), , . , .


, , , . , TickerSymbolSelectedEvent , string , .

public void Run() { ... this.eventAggregator .GetEvent<TickerSymbolSelectedEvent>() .Subscribe(ShowNews); } public void ShowNews(string companySymbol) { articlePresentationModel.SetTickerSymbol(companySymbol); }


, , , .

, , .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); fundAddedEvent.Subscribe(FundAddedEventHandler, ThreadOption.PublisherThread); fundAddedEvent.Unsubscribe(FundAddedEventHandler);
, , . Subscribe .

FundAddedEvent fundAddedEvent = this.eventAggregator.GetEvent<FundAddedEvent>(); subscriptionToken = fundAddedEvent.Subscribe( FundAddedEventHandler, ThreadOption.UIThread, false, fundOrder => fundOrder.CustomerId == this.customerId); fundAddedEvent.Unsubscribe(subscriptionToken);


, "Weak References" MSDN: http://msdn.microsoft.com/en-us/library/ms404247.aspx .