private void StartBtn_Click(object sender, RoutedEventArgs e)
{
if (StartMenu.Visibility == Visibility.Visible)
{
StartMenu.CloseMenu();
StartMenu.Visibility = Visibility.Collapsed;
}
else
{
StartMenu.OpenMenu();
StartMenu.Visibility = Visibility.Visible;
}
MusicControl2.Visibility = Visibility.Collapsed;
}