如何重置DispatcherTimer？

Question

这些是DispatcherTimer的声明和方法:

private DispatcherTimer DishTimer;
private TimeSpan SpanTime;
private void InitTimer()
{

    DishTimer = new DispatcherTimer();
    DishTimer.Interval = new TimeSpan(0, 0, 0, 1);
    DishTimer.Tick += TimerOnTick;

}
private void TimerOnTick(object sender, object o)
{
    SpanTime = SpanTime.Add(DishTimer.Interval);
    Duration.DataContext = SpanTime;
}        

这就是我所说的:

private void CaptureButton_Click(object sender, RoutedEventArgs e)
{
    if ((string) CaptureButton.Content == "Capture")
    {

        CaptureAudio();
        InitTimer();
        DishTimer.Start();

        ProgressRing.IsActive = true;
        CaptureButton.Content = "Stop";
    }
    else
    {
        StopCapture();
        DishTimer.Stop();
        ProgressRing.IsActive = false;
        CaptureButton.Content = "Capture";
    }

}

这是我显示计时器的xaml代码:

<TextBlock Name="Duration" Text="{Binding}"  HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="24"></TextBlock>

我正在制作一个录音应用程序,我想每次用户按下捕获来显示计时器.我的问题是我无法重置它

Answer 1

调用Stop()然后Start()应该重新启动Timer Interval.

Answer 2

SpanTime按下"捕获"按钮时需要(重新)设置.做就是了

SpanTime = new TimeSpan();

它应该重置为零并重新开始,直到再次按下按钮.