I have a combobox which has a BindingField that updates when a corresponding grid row is selected.  The combobox is really a dropdown (non-editable), and displays a queried list depending on other selections.  If no selection is made from the dropdown I want a blank to show.  This works okay until I select one that has a value showing in the dropdown.  After this, every blank value shows as the previous record's value instead of blank.  I think the issue is that when the record changes, and the new record has a blank field it is looking for a blank in that dropdown, but doesn't find it so it just stays on the current field.  I may be confusing the point here, but if you understand my question a solution to this problem would be great.  Thanks!