Extending WPF toolkits Data grid

This assumes that you have already installed WPF tool Kit

Applying filter to WPF tool kit Data Grid
http://www.codeproject.com/KB/WPF/wpf_datagrid_filter.aspx


WPF DataGrid Practical Examples with edit and Update (CRUD)
http://www.codeproject.com/KB/WPF/WPFDataGridExamples.aspx



Providing Drill Down or Row details.
http://www.tanguay.info/web/index.php?pg=codeExamples&id=132


An Introduction to ObservableCollection in WPF
 http://sweux.com/blogs/psampaio/index.php/2009/04/28/an-introduction-to-observablecollection-in-wpf/


WPF 3.5 SP1 feature: IEditableCollectionView
http://blogs.msdn.com/vinsibal/archive/2008/05/20/wpf-3-5-sp1-feature-ieditablecollectionview.aspx


Data Binding with Observable Collection

http://weblogs.asp.net/joelvarty/archive/2008/11/17/silverlight-databinding-the-observable-collection.aspx