private void btnRemoveSS_Click(object sender, RoutedEventArgs e)
 {
     if (grdSplashScreen.SelectedItem != null)
     {
         IViewModel viewModel = DataContext as IViewModel;
         if (viewModel != null)
         {
             viewModel.DeleteSplashScreen(grdSplashScreen.SelectedItem);
         }
     }
 }