what's the difference between binding ItemsSource to an ObservableCollection and to a CollectionViewSource?

Question

I know CollectionViewSource support grouping and sorting, except this, is there any other difference between binding ItemsSource to an ObservableCollection and to a CollectionViewSource?

Answer 1

CollectionView of the underlying CollectionViewSource in addition to grouping, sorting, filtering, maintains CurrentItem that comes handy while setting from ViewModel.