When I have a TextBox editing element for a cell in edit mode, pressing Tab causes the next cell to become current and enter edit mode. I am having difficulty achieving the same behavior for more complex controls, such as ComboBox (not RadComboBox). I know how to customize ComboBox key handling so that Tab will select an item and hide the dropdown. But no matter what I do, I can't get it to move to the next cell. Instead focus moves to some control outside of the RadGridView, even when the drop down was not open.