Be notified when visual/logical child added/removed

Question

I am currently looking for a way to be notified when a child is added to the visual or logical children.

I am aware of the Visual::OnVisualChildrenChanged method, but it does not apply to me since I can't always inherit and override this function. I am looking for an event.

So, is there a way for the owner of a FrameworkElement/Visual to be notified when a child is added?

Answer 1

Isn't it easier to extend

System.Windows.Controls.UIElementCollection 

to do the notification and use

protected override UIElementCollection CreateUIElementCollection(FrameworkElement logicalParent)

?

Answer 2

I believe that FrameworkElement.Loaded and FrameworkElement.Unloaded are fired when the control is added to and removed from the Visual Tree, respectively. However, the few times that I was trying to do anything with them I wasn't able to get them to fire consistently (I was using Class Event Handlers at the time, so that might have something to do with it).