I have a xamWebchart bound to a collection in the view model. (I am following the MVVM pattern). However, when the collection changes the chart does not reflect the changes to the collection . I am setting RefreshEnabled to false before I change the collection and then setting it to true after the collection is changed, as explained in this post http://blogs.infragistics.com/forums/p/38206/219989.aspx#219989. However, my chart does not refresh and show the changes made to the collection.  My dataSource implements INotifyCollectionChanged. Any help will be appreciated.