Hi, I am binding the ItemSource of a the grid to my custom IBindingList object. When the IBindingList raises the ListChanged event with a ListChangedType of Reset, the grid only asks for the first column of data, for the visible rows. And column 1 doesn’t redraw either (Visible cells are stale). Wrapping my IBindingList with a DataGridCollectionView object did not solve the problem. If I drop the V1.0 grid back in with no other code changes, everything redraws when the event is raised.