使用计时器停止另一个计时器

本文关键字：计时器 另一个 | 更新日期: 2023-09-27 18:26:49

我是C#的业余爱好者，正在做一个项目。

我用了3个计时器，其中一个是20秒的圆形计时器。我希望在20秒后，其他2个计时器必须停止

我无法访问/调用循环计时器中的其他2个计时器。这是代码：

public void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{            
    DispatcherTimer tgtTimer = new DispatcherTimer();
    tgtTimer.Tick += new EventHandler(tgtTimer_tick);
    tgtTimer.Interval = new TimeSpan(0, 0, 3);
    tgtTimer.Start();

    DispatcherTimer txbTimer2 = new DispatcherTimer();
    txbTimer2.Tick += new EventHandler(txbTimer2_tick);
    txbTimer2.Interval = new TimeSpan(0, 0, 0, 4, 000);
    txbTimer2.Start();
    DispatcherTimer rt = new DispatcherTimer();
    rt.Tick += new EventHandler(rt_tick);
    rt.Interval = new TimeSpan(0, 0, 1);
    rt.Start();
}
private void tgtTimer_tick(object sender, EventArgs e)
{ //some code }
private void txbTimer2_tick(object sender, EventArgs e)
{ //some code }
int i = 20 //for the 20 sec round timer
private void rt_tick(object sender, EventArgs e) //round timer
{
    if(i!=0)
    { 
        i--;
        txbTime.Text = "";
        txbTime.Text = Convert.ToString(i) + "s";
    }
    else 
    {
        this.Opacity = 0.3;  
        //tgtTimer and txbTimer2 can't be accessed from here          
    }             
}

我应该如何停止2个定时器？

使用计时器停止另一个计时器

您应该尝试在mouseleftbutton down事件之外添加计时器，如下所示：

        DispatcherTimer tgtTimer = new DispatcherTimer();
        DispatcherTimer txbTimer2 = new DispatcherTimer();
        DispatcherTimer rt = new DispatcherTimer();

public void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {            
        tgtTimer.Tick += new EventHandler(tgtTimer_tick);
        tgtTimer.Interval = new TimeSpan(0, 0, 3);
        tgtTimer.Start();

        txbTimer2.Tick += new EventHandler(txbTimer2_tick);
        txbTimer2.Interval = new TimeSpan(0, 0, 0, 4, 000);
        txbTimer2.Start();

        rt.Tick += new EventHandler(rt_tick);
        rt.Interval = new TimeSpan(0, 0, 1);
        rt.Start();
    }

将对计时器的引用移出按钮点击：

DispatcherTimer tgtTimer = new DispatcherTimer();
DispatcherTimer tgtTimer2 = new DispatcherTimer();
public void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{            
        DispatcherTimer tgtTimer = new DispatcherTimer(); //here
        tgtTimer.Tick += new EventHandler(tgtTimer_tick);
        tgtTimer.Interval = new TimeSpan(0, 0, 3);
        tgtTimer.Start();

        DispatcherTimer txbTimer2 = new DispatcherTimer(); //and here
        txbTimer2.Tick += new EventHandler(txbTimer2_tick);
        txbTimer2.Interval = new TimeSpan(0, 0, 0, 4, 000);
        txbTimer2.Start();
        //or inline the method to stay within scope
        DispatcherTimer rt = new DispatcherTimer();
        rt.Tick += (ob, ev) =>
        {
              //still in scope
              txbTimer2.Start();
        };
        rt.Interval = new TimeSpan(0, 0, 1);
        rt.Start();
}
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