重新启动秒表时，节省的时间和经过的时间略有不同

Question

     private void AppBarButton_Click(object sender, RoutedEventArgs e) //  Stopwatch Start
{
    timer = new Timer(new TimerCallback(MyMethod), TimerDisplay, 0, 1);
    timer2 = new Timer(new TimerCallback(MyMethod_Current), CurrentTimerDisplay, 0, 1);
    stopwatch.Start();
    currentStopwatch.Start();
}

private async void MyMethod(object Displayblock)
{
    ms = stopwatch.ElapsedMilliseconds;
    TextBlock Bd = (TextBlock)Displayblock;
    ss = ms / 1000; ms = ms % 1000;
    mm = ss / 60; ss = ss % 60;
    hh = mm / 60; mm = mm % 60;
    dd = hh / 24; hh = hh % 24;
    await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => { Bd.Text = dd.ToString("00") + ":" + hh.ToString("00") + ":" + mm.ToString("00") + ":" + ss.ToString("00") + ":" + ms.ToString("000"); });

}

private async void MyMethod_Current(object Displayblock1)
{
    ms1 = currentStopwatch.ElapsedMilliseconds;
    TextBlock Bd1 = (TextBlock)Displayblock1;
    ss1 = ms1 / 1000; ms1 = ms1 % 1000;
    mm1 = ss1 / 60; ss1 = ss1 % 60;
    hh1 = mm1 / 60; mm1 = mm1 % 60;
    dd1 = hh1 / 24; hh1 = hh1 % 24;
    await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => { Bd1.Text = dd1.ToString("00") + ":" + hh1.ToString("00") + ":" + mm1.ToString("00") + ":" + ss1.ToString("00") + ":" + ms1.ToString("000"); });

}

private void AppBarButton_Click_2(object sender, RoutedEventArgs e) // Add Lap
{
    if(LapStore.Text=="")
    {
        currentStopwatch.Restart(); // when I restart the second timer and pause theres a slight difference of milli seconds
        Lap_Count++;
        LapStore.Text += ("Lap" + " " + Lap_Count).ToString();
        LapStore.Text += ("\n" + TimerDisplay.Text + "\n").ToString();
    }
    else
    {
        currentStopwatch.Restart();
        Lap_Count++;
        LapStore.Text += ("Lap" + " " + Lap_Count).ToString();
        LapStore.Text += ("\n" + CurrentTimerDisplay.Text + "\n").ToString();
    }
}

当我重新启动第二个计时器时，我没有任何区别。什么是避免这种情况的可能解决方案，因为当我添加一圈并暂停秒表并计算出以毫秒为单位的差异时。

Answer 1

<强>更新：
我认为缺少的时间来自UI更新和按钮事件之间的延迟。你应该在按钮事件中花时间：

private void AppBarButton_Click_2(object sender, RoutedEventArgs e) // Add Lap
{
    var elapsed = currentStopwatch.Elapsed;
    currentStopwatch.Restart();
    Lap_Count++;
    LapStore.Text += ("Lap" + " " + Lap_Count).ToString();
    LapStore.Text += ("\n" + elapsed.ToString("G") + "\n").ToString();
}

---

这种行为是正确的IMO：

1. 你在x.123秒按下“圈按钮”
2. currentStopwatch已重置
3. currentStopwatch继续0.000秒，但stopwatch仍在x.123秒继续

=＆GT;有一个123 ms的“偏移”。

P.S。：你为什么要自己计算，为什么不简单：

elapsed = stopwatch.Elapsed;
ms = elapsed.Milliseconds;
ss = elapsed.Seconds;
mm = elapsed.Minutes;
hh = elapsed.Hours;
dd = elapsed.Days;