Hi Abdullah, Many thanks for the response. That approach helped me quite a lot. I also found that if you update the row's data context in the ''ComboBox_SelectionChanged'' event handler, that you can then use data triggers in XAML because they then use then new value rather than waiting for the EndEdit command to be ...

Someone please help ...  My scenario is that if the user chooses a particular value (combobox) in one column of the grid, another column must either allow him to select further values or it becomes ''not applicable''. The closest solution I've managed to find was here http://pstaev.blogspot.com/2008/06/having-different-celleditor-for.html. ...