如何暂停/恢复线程 [英] how to pause/resume a thread

问题描述

我怎样才能暂停/恢复线程？有一次，我加入（）一个线程，我不能重新启动它。
那么，如何可以启动一个线程，并使其暂停每当按钮暂停被按下，并恢复它当按下恢复按钮？

How can I pause/resume a thread? Once I Join() a thread, I can't restart it. So how can I start a thread and make it pause whenever the button 'pause' is pressed, and resume it when resume button is pressed?

唯一这个线程做的事情，是显示一个标签控件一些随机的文本。

The only thing this thread does, is show some random text in a label control.

推荐答案

也许 ManualResetEvent的是一个不错的选择。
简单例子：

Maybe the ManualResetEvent is a good choice. A short example:

// Main thread:
// boolean parameter whether to set the initial state to signaled.
private static ManualResetEvent event = new ManualResetEvent(true); 

public void OnPauseClick(...) {
   event.Reset();
}

public void OnResumeClick(...) {
   event.Set();
}

// Worker thread
public void DoSth() {
   while (true) {
     // show some random text in a label control (btw. you have to
     // invoke the action because you are not in the main thread)
     event.WaitOne(); // waits for the signal to be set
   }
}

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