When Clearing an ObservableCollection, There are No Items in e.OldItems
- by cplotts
I have something here that is really catching me off guard.
I have an ObservableCollection of T that is filled with items. I also have an event handler attached to the CollectionChanged event.
When you Clear the collection it causes an CollectionChanged event with e.Action set to NotifyCollectionChangedAction.Reset. Ok, that's normal. But what is…