I created a comboBox in a form and the controlsource is a DBF file.
I can use the mouse to click and choose an option from the combobox.
I can press Alt+DownArrow to display the list of the combobox but
I can't use the Up/Down Arrow to choose an option from the list of the
combobox. Why?

I have tried the following method:
1. DoubleClick
2. LostFocus
3. InteractiveChangeEvent
4. Keypress event

What commands should I use to enable users to use Up/Down Arrow from the keyboard to choose an option from the list of the combobox?

Thanks a lot for your help,