I am displaying my search result in a Xceed grid. The grid is editable. In the grid, one can update Country, State and City from the combobox in the grid.

* The 3 fields are related ie On change of country, the related state list should be updated in the combobox.

 Now I tried using

Xceed.Wpf.DataGrid.DataRow dr = (Xceed.Wpf.DataGrid.DataRow)grdSearchResults.CurrentItem;

BindingExpression be = dr.GetBindingExpression(Xceed.Wpf.DataGrid.DataRow.DataContextProperty);

be.UpdateSource(); // or be.UpdateTarget();

Also i tried few other options like EndEdit() or LostFocus or MoveTo etc but of  no use and generates the same error

the error it display is " Cant update while DeferRefresh is in use".  I am using the DeferRefresh on my ObjectDataProvider.

I tried removing the DeferRefresh from ObjectDataProvider but the same error.

Can anyone please help?