private void btnStart_Click(object sender, RoutedEventArgs e)
{
if (btnStart.Content == "Start")
{
_currentTimer = new Timer();
txtStart.Text = _currentTimer.Start.ToString("HH:mm:ss");
btnStart.Content = "Ende";
}
else
{
DateTime Ende = new DateTime(2020, 11, 10, 0, 0, 0);
_currentTimer.Ende = DateTime.Now;
_currentTimer.Dauer = _currentTimer.Ende - _currentTimer.Start;
txtEnde.Text = _currentTimer.Ende.ToString("HH:mm:ss");
Timer.Add(_currentTimer);
}
foreach (Control tbx in Controls)
{
if (tbx.GetType() == typeof(TextBox))
{
((TextBox)tbx).Clear();
}
}
btnStart.Content = "Start";
}
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