public MainPage()
 {
     InitializeComponent();
     deleteButton  = ApplicationBar.Buttons[1] as ApplicationBarIconButton;
     CurrentSprite = null;
     DialogGrid.SetVisibility(false, false);
 }
 private void HideBlendMenu()
 {
     if (DialogGrid.Visibility == System.Windows.Visibility.Visible)
     {
         DialogGrid.SetVisibility(false, true);
     }
 }
 private void ShowBlendMenu(BlendModeChooser.ResetParams param)
 {
     if (DialogGrid.Visibility == System.Windows.Visibility.Collapsed)
     {
         DialogGrid.SetVisibility(true, true);
         blendChooser.CurrentParrams = param;
     }
 }