问题
I am deriving a class from the Silverlight Panel class so that I can perform some custom positioning of the child elements of the panel. How do you find out when the collection of child items has been changed? The Panel.Children collection does not have any events indicating change notifications.
Do I have to scan the Children collection each time a measure occurs and look for the elements that have been added and disappeared?
回答1:
Try this post: Silverlight: Getting notified upon changes to a Panel’s Children (of type UIElementCollection) property. Not a perfect solution, but might help.
来源：https://stackoverflow.com/questions/684197/silveright-uielementcollection-change-notifications