private void ContentPanel_Tap(object sender, System.Windows.Input.GestureEventArgs e)
 {
     try
     {
         if (controls.Visibility == System.Windows.Visibility.Collapsed)
         {
             Open_Controls.Begin();
         }
         else
         {
             Close_Controls.Begin();
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }
 private void player_MarkerReached(object sender, TimelineMarkerRoutedEventArgs e)
 {
     Close_Controls.Begin();
 }