Question

我是C＃的业余爱好者，我正在做一个项目。

我使用了3个计时器，其中一个是20秒计时器。我希望在20秒过后，其他2个计时器必须停止

我无法从圆形计时器访问/调用其他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个计时器？

Answer 1

你应该尝试在mouseleftbutton down事件之外添加定时器，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();
    }

Answer 2

将定时器的引用移出按钮单击：

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();
}

使用计时器停止另一个计时器

2 个答案: