c# – 从特定线程调用方法

概述我如何在调用SomeAsyncMethod的同一线程上调用onCompleteCallBack方法？ public void SomeAsycMethod ( Action<object> onCompleteCallBack ){ // get the current thread /* var ThisThread = Thread.CurrentThread. */ 我如何在调用SomeAsyncmethod的同一线程上调用onCompleteCallBack方法？

public voID SomeAsycmethod ( Action<object> onCompleteCallBack ){    // get the current thread     /* var ThisThread = Thread.CurrentThread. */    Task.Factory.StartNew( () =>    {        Thread.Sleep( 1000 );// do some work;        // lastly call the onCompleteCallBack on 'ThisThread'        onCompleteCallBack( "some result" );        // I am looking for something like:        /* ThisThread.Invoke("some result"); */    });}

解决方法 虽然你不能保证你会在同一个线程上调用回调,但你可以保证它将在同一个 Synchronization Context中被调用(假设原始调用中存在一个).

public voID SomeAsycmethod ( Action<object> onCompleteCallBack ){    // get the current context    var context = SynchronizationContext.Current;    Task.Factory.StartNew( () =>    {        Thread.Sleep( 1000 );// do some work;        // lastly call the onCompleteCallBack on 'ThisThread'        onCompleteCallBack( "some result" );        // I am looking for something like:        context.Post(s => onCompleteCallBack ("some result"),null);     });}

例如,在windows窗体或WPF程序中,上面将确保在GUI线程上调用回调(相应地通过消息循环或调度程序).类似于ASP.NET上下文.

话虽如此,我同意Justin Harvey的回复任务< T>可能会是一个更好的设计.

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