Occurs after the Collection Source's collection has been recreated.
public event EventHandler CollectionChanged
Public Event CollectionChanged As EventHandler
The CollectionChanged event handler receives an argument of the EventArgs type.
Handle this event to access a Collection Source's collection in a View Controller. Subscribe to this event and perform your code in the event handler. Do not perform the collection-dependent code after the Controller has been activated. This is so, because while View Controllers are activating for a List View, the List View's CollectionSourceBase.Collection property may return null.
This event is raised by the CollectionSourceBase.ResetCollection method, if the recreated collection differs from the previously existing one.