void ForwardBackButton_Click(UserControlWithClick sender)
 {
     if (fbb_MouseClick != null)
     {
         fbb_MouseClick(this, isBackButton);
     }
 }
 public void BasicItemBarButton_Click(UserControlWithClick sender)
 {
     if (buttonType == ItemBarButtonType.REMOVE)
     {
         clearForwardBackHighlighting();
         setForwardBackVisibility(System.Windows.Visibility.Visible);
     }
     else
     {
         if (ButtonPressed != null)
         {
             ButtonPressed(this);
         }
     }
 }