/// <summary>
/// Invoked whenever an unhandled <see cref="E:System.Windows.UIElement.GotFocus" /> event reaches this element in its route.
/// </summary>
/// <param name="e">The <see cref="T:System.Windows.RoutedEventArgs" /> that contains the event data.</param>
protected override void OnGotFocus(RoutedEventArgs e)
{
ParentTreeView.Select(this, true);
base.OnGotFocus(e);
}