I used a <mx:datagrid> and a EditorDatafield with a TextInput Custom ItemRenderer but after pressing enter key in a itrem renderer cell after adding some data the focus of the datagrid not move to the next row of same colIndex or cell .!!!
If any body help me how to set a FOCUS on the next cell or the desired cell using action script on mx datagrid keyboard event or any suitable event.
Did you try changing editorUsesEnterKey?