I have a windows app with a combo box. The user selects a set number and then the set type displays in a disabled text box beside it. This works fine if the user selects it in the combo box, using the selected_index_changed method. But if someone types in a valid set number, while it repositions the combo box onto that set number, the text box doesn't update. I've tried using the same code in the Enter, selected_Value_change, and changecommitted methods but those don't work either. Is there a way to catch when someone types in the set number in the box and then tabs or clicks out of the box?