线程终止时调用方法

I have a form that starts a thread. Now I want the form to auto-close when this thread terminates.

我有一个启动线程的表单。现在我希望表单在此线程终止时自动关闭。

The only solution I found so far is adding a timer to the form and check if thread is alive on every tick. But I want to know if there is a better way to do that?

到目前为止我找到的唯一解决方案是在表单中添加一个计时器,并检查每个tick上是否存在线程。但我想知道是否有更好的方法可以做到这一点?

Currently my code looks more less like this

目前我的代码看起来更像这样

partial class SyncForm : Form {
    Thread tr;

    public SyncForm()
    {
        InitializeComponent();
    }

    void SyncForm_Load(object sender, EventArgs e)
    {
        thread = new Thread(new ThreadStart(Synchronize));
        thread.IsBackground = true;
        thread.Start();
        threadTimer.Start();
    }

    void threadTimer_Tick(object sender, EventArgs e)
    {
        if (!thread.IsAlive)
        {
            Close();
        }
    }

    void Synchronize()
    {
        // code here
    }
}

5 个解决方案

#1

The BackgroundWorker class exists for this sort of thread management to save you having to roll your own; it offers a RunWorkerCompleted event which you can just listen for.

BackgroundWorker类存在于此类线程管理中,以节省您必须自己滚动;它提供了一个RunWorkerCompleted事件,您可以只听。

#2

Edit to make it call a helper method so it's cleaner.

编辑使其调用辅助方法,使其更清晰。

thread = new Thread(() => { Synchronize(); OnWorkComplete(); });

...

private void OnWorkComplete()
{
    Close();
}

#3

If you have a look at a BackgroundWorker, there is a RunWorkerCompleted event that is called when the worker completes.

如果您查看BackgroundWorker,则会在工作程序完成时调用RunWorkerCompleted事件。

For more info on BackgroundWorkers Click Here

有关BackgroundWorkers的更多信息,请单击此处

You could add a call to a complete function from the Thread once it has finished, and invoke it.

完成后,您可以从Thread添加对完整函数的调用,并调用它。

void Synchronize()
{
    //DoWork();
    //FinishedWork();
}

void FinishedWork()
{
if (InvokeRequired == true)
  {
  //Invoke
  }
else
  {
  //Close
  }
}

#4

Have a look at delegates, IAsyncResult, BeginInvoke and AsyncCallback

看看代理,IAsyncResult,BeginInvoke和AsyncCallback

#5

At the end of your thread method, you can call Close() using the Invoke() method (because most WinForms methods should be called from the UI thread):

在线程方法结束时,可以使用Invoke()方法调用Close()(因为大多数WinForms方法应该从UI线程调用):

public void Synchronize()
{
   Invoke(new MethodInvoker(Close));
}

#1