protected override void OnConnected(UIElement newElement)
{
Compositor compositor = Window.Current.Compositor;
// Create AmbientLight and set its properties
AmbientLight ambientLight = compositor.CreateAmbientLight();
ambientLight.Color = Colors.White;
// Associate CompositionLight with XamlLight
CompositionLight = ambientLight;
// Add UIElement to the Light's Targets
AmbLight.AddTargetElement(GetId(), newElement);
}
protected override void OnDisconnected(UIElement oldElement)
{
// Dispose Light when it is removed from the tree
AmbLight.RemoveTargetElement(GetId(), oldElement);
CompositionLight.Dispose();
}