private void Button_Click(object sender, RoutedEventArgs e)
 {
     var dialog = new MessageDialog("Are you sure you want to remove test?\n..." + e.ToString() + "...adsa");
     dialog.Title = "Remove TEST?";
     dialog.Commands.Add(new UICommand("OK", new UICommandInvokedHandler(this.RemoveTest)));
     dialog.Commands.Add(new UICommand("Cancel", null));
     dialog.ShowAsync();
 }