PaginatedObservableCollection can be used at places where you wanted to show data in a paginated manner. This is a special ObservableCollection which keeps the original collection inside and always exposes a subset of the collection based on some properties
More details can be found in the blog - http://jobijoy.blogspot.com/2008/12/paginated-observablecollection.html
A running silverlight demo is also can be seen in the blog
- the code is not tested against multi threaded scenarios