Does version 3.0 supports ObservableCollection for editing and adding new record? Or we still have to use IBindingList Interface. If yes can you guide me with any examples. Thanks  Atul   

Hi 1) question of performance on visible change I am using the DataGrid for example on a TabItem in a TabControl. Always when i switch back to the tab with the Table it recreates all (visible) rows. Is there a way to suppress the recreation of the rows and just keep the old ones? (the datasource does not change) 2) question of row status ...