'System.Reactive.Concurrency.Scheduler.NewThread'已過時

我試圖從數據庫檢索數據使用實體框架5.0代碼快速和反應性擴展（Rx）。我正在爲此編寫以下代碼。'System.Reactive.Concurrency.Scheduler.NewThread'已過時

var obs = DataContext.GetDataContext().BreakdownCauses.OrderBy(x => x.Cause).ToObservable(Scheduler.NewThread); 
obs.SubscribeOnDispatcher().Subscribe(x => ItemCollection.Add(slow(x))); 

BreakdownCause slow(BreakdownCause cs) 
    { 
     System.Threading.Thread.Sleep(500); 
     return cs; 
    }

但它告訴我這樣的警告：

'System.Reactive.Concurrency.Scheduler.NewThread' is obsolete: 'This property is no longer supported due to refactoring of the API surface and elimination of platform-specific dependencies. Please add a reference to the System.Reactive.PlatformServices assembly for your target platform and use NewThreadScheduler.Default to obtain an instance of this scheduler type. See http://go.microsoft.com/fwlink/?LinkID=260866 for more information.'

並在運行時我得到一個異常：

The calling thread cannot access this object because a different thread owns it.

請建議我我如何使用無擴展（Rx）的正確的EF5.0在我的WPF應用程序中快速編碼或以任何連擊方式異步調用數據庫。

來源

2013-02-16 Md.Hasanuzzaman

您是否嘗試根據提供給您的消息更改您的代碼？ – 2013-02-16 11:17:14

ya。現在警告消失了。但異常仍然存在。 – 2013-02-16 11:36:02

請參閱此問題的答案 - http://stackoverflow.com/questions/7579237/whats-the-difference-between-subscribeon-and-lookeon。看起來'SubscribeOnDispatcher'不一定將您對'ItemCollection.Add'的調用封送回UI線程。 – 2013-02-16 13:40:42

您需要調用ObserveOnDispatcher而不是SubscribeOnDispatcher。見here。

來源

2013-02-17 13:10:19 ozczecho

'System.Reactive.Concurrency.Scheduler.NewThread'已過時

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