private void Click(object sender, RoutedEventArgs e)
{
if (sender == Logout)
{
App.Abmelden(null);
}
else if (sender == volumeOn || sender == volumeOff)
{
Sounddesign.PlaySoundAsync(Sounddesign.BUTTON_PUSH1);
Sounddesign.CycleAmbient();
volumeOn.Visibility = Sounddesign.CURRENT_AMBIENT == null ? Visibility.Collapsed : Visibility.Visible;
volumeOff.Visibility = Sounddesign.CURRENT_AMBIENT == null ? Visibility.Visible : Visibility.Collapsed;
}
}