XAML Developer Reference

Collection Views

After binding to a collection of data, you can sort, filter, or group the data using a collection view. A collection view is like a layer on top of a binding source collection, enabling you to navigate and display the source collection based on sort, filter, and group queries, without having to change the underlying source collection itself.

If a source collection implements the INotifyCollectionChanged interface, the changes raised by the CollectionChanged event are propagated to the views. A source collection can have multiple views associated with it.

Sorting and Grouping Using a CollectionView

Although WPF supports several CollectionView classes such as ListCollectionView and Binding ListCollectionView, Silverlight supports grouping ...