睡眠X秒，并在每个秒更新标签 [英] Sleep for X sec and update label on each Sec

问题描述

你好，

我有一个调用方法(Connect())的backgrounworker线程.该过程完成后，将进入RunCompleted，在此处检查其connectedToServer与否.不，我叫一个方法(CallToReconnect()).在这里，我必须等待20秒，每秒钟更新状态栏，最后调用一个启动后台线程的方法.为此:

Hello,

I have a backgrounworker thread that calls a method (Connect()). When that process is completed it comes to RunCompleted where I check it its connectedToServer or not. I not, I call a method (CallToReconnect()). Over here, I got to wait for 20 secs updating the status bar on each sec and finally call a method that starts the background thread. For this :

private void CallToReConnect()
{
    Logger.LogInfo("Call To ReConnect");
    currentState = RECONNECTING;
    int counter = 20;
    cancelSplitButton.Visible = true;
    // Try again after 20 secs
    System.Windows.Threading.DispatcherTimer timer = new  System.Windows.Threading.DispatcherTimer();
    timer.Tick += delegate
    {
        statusLabel1.Text = "ReConnect in " + counter.ToString() + " secs";
        counter--;
       // Thread.Sleep(1000);
        if (counter == 0)
            timer.Stop();
    };
    timer.Interval = new TimeSpan(0, 0, 1);
    timer.Start();
    //Thread.Sleep(20000);

    ConnectClicked();
}

此代码启动DispatchTimer，然后也启动ConnectClicked().我想在调用Connectclicked()之前完成该部分，因此我的状态栏可以看到在XX秒内重新连接"-XX-20、19、18等.如果将其替换为Thread.Sleep(20000)，则它将等待持续20秒然后它才开始.但是我想在状态栏中显示正在重新连接"，所以我选择了这种方式.

我要去哪里错了?如何实现目标?

感谢

This code starts the DispatchTimer and then also starts ConnectClicked(). I want to finish that part before Connectclicked() is called, so my status bar can see "Reconnecting in XX secs" - XX - 20, 19, 18, etc. If I replace that with Thread.Sleep(20000) then it waits for 20 secs & then only it starts. But I want to show the Reconnecting in status bar so I opted this way.

Where am I going wrong ? How to accomplish the goal ?

Thanks

推荐答案

将对ConnectClicked的调用移至计时器事件处理程序中:

Move the call to ConnectClicked into the timer event handler:

private void CallToReConnect()
{
    Logger.LogInfo("Call To ReConnect");
    currentState = RECONNECTING;
    int counter = 20;
    cancelSplitButton.Visible = true;
    // Try again after 20 secs
    System.Windows.Threading.DispatcherTimer timer = new  System.Windows.Threading.DispatcherTimer();
    timer.Tick += delegate
    {
        statusLabel1.Text = "ReConnect in " + counter.ToString() + " secs";
        counter--;

        if (counter == 0) {
            timer.Stop();
            ConnectClicked(); // might need to Invoke it?
        }
    };
    timer.Interval = new TimeSpan(0, 0, 1);
    timer.Start();
}

我不确定在哪个线程中调度计时器事件，如果要在UI线程中运行ConnectClicked，则可能必须使用Invoke.

I''m not sure which thread timer events are dispatched in, you may have to use Invoke if you want ConnectClicked to be run in the UI thread.

同时使用线程和计时器时间没有意义.使用Thread.Sleep.这就是您所需要的.

另外，请务必避免使用计时器.在我过去的答案中进行了解释:
C#中的计时器线程 [

Using thread and timer at the same time makes no sense. Use Thread.Sleep. This is all you need.

Also, avoid using timer by all means. In explained it in my past answer:
Timer Threading in C#[^].

—SA

SA，然后使用Thread.Sleep，如何根据需要更新状态栏中的文本?我无法按预期处理该部分，因此尝试使用计时器.

您是否有避免计时器的想法，请使用Thread.Sleep并每秒更新一次文本?

SA, then by using Thread.Sleep, how do I update the text in statusbar as wanted ? I am not able to handle that part as expected hence tried with timer.

Do you have any idea to avoid timer, use Thread.Sleep & update the text every sec ?

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