private void DeleteNinja(object sender, RoutedEventArgs e)
{
switch (MessageBox.Show("Delete? Really?", "Ninja Entry", MessageBoxButton.YesNo))
{
case MessageBoxResult.Yes:
var ninjaToDelete = _currentNinja;
ninjaListBox.SelectedIndex = 0;
_repo.DeleteCurrentNinja(ninjaToDelete);
break;
case MessageBoxResult.No:
break;
}
}