void cmdDataBind_Click(object sender, RoutedEventArgs e)
 {
     PageNavigator.LoadPage(new DataBinding.DataBindingTest());
 }
 void cmdMediaTest_Click(object sender, RoutedEventArgs e)
 {
     PageNavigator.LoadPage(new Media.MediaPlayerTest());
 }
 void cmdGrid_Click(object sender, RoutedEventArgs e)
 {
     PageNavigator.LoadPage(new Layout.GridTest());
 }
 void cmdAnimation_Click(object sender, RoutedEventArgs e)
 {
     PageNavigator.LoadPage(new Animation.Animation());
 }
 void cmdStackPanel_Click(object sender, RoutedEventArgs e)
 {
     PageNavigator.LoadPage(new Layout.StackPanelTest());
 }