protected override void OnInitialized(EventArgs e)
{
if (TemplatedParent == null)
{
throw new InvalidOperationException("Must be in a template");
}
base.OnInitialized(e);
if (AdornedElement != null)
{
BindingOperations.SetBinding(this, WidthProperty, AdornedElement.CreateOneWayBinding(ActualWidthProperty));
BindingOperations.SetBinding(this, HeightProperty, AdornedElement.CreateOneWayBinding(ActualHeightProperty));
}
}