private static void OnVisualStateGroupsChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
FrameworkElement element = obj as FrameworkElement;
if (element != null)
{
Control control = VisualStateManager.GetTemplatedParent(element);
if (control != null)
{
System.Diagnostics.Debug.Assert(element == VisualStateManager.GetTemplateRoot(control));
Microsoft.Windows.Controls.VisualStateBehaviorFactory.AttachBehavior(control);
}
}
}
