委派任务并在完成时收到通知(在 C# 中) [英] Delegating a task in and getting notified when it completes (in C#)

问题描述

从概念上讲，我想完成以下操作，但在理解如何在 C# 中正确编码时遇到了麻烦:

Conceptually, I would like to accomplish the following but have had trouble understand how to code it properly in C#:

SomeMethod { // Member of AClass{}
    DoSomething;
    Start WorkerMethod() from BClass in another thread;
    DoSomethingElse;
}

然后，当 WorkerMethod() 完成时，运行:

Then, when WorkerMethod() is complete, run this:

void SomeOtherMethod()  // Also member of AClass{}
{ ... }

谁能举个例子?

推荐答案

BackgroundWorker 类正是为此目的添加到 .NET 2.0 中的.

The BackgroundWorker class was added to .NET 2.0 for this exact purpose.

简而言之:

BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += delegate { myBClass.DoHardWork(); }
worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(SomeOtherMethod);
worker.RunWorkerAsync();

如果需要，您还可以添加诸如取消和进度报告之类的奇特内容:)

You can also add fancy stuff like cancellation and progress reporting if you want :)

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