Why is ReadOnlyObservableCollection.CollectionChanged not public?

Question

Why is ReadOnlyObservableCollection.CollectionChanged protected and not public (as the corresponding ObservableCollection.CollectionChanged is)?

What is the use of a col

Answer 1

I've found a way for you of how to do this:

ObservableCollection obsCollection = new ObservableCollection();
INotifyCollectionChanged collection = new ReadOnlyObservableCollection(obsCollection);
collection.CollectionChanged += new NotifyCollectionChangedEventHandler(collection_CollectionChanged);

You just need to refer to your collection explicitly by INotifyCollectionChanged interface.