You can only change controls like this in design view - never in form view.
What you CAN do is to have two controls on your form, a textbox and a
combobox (they can even both use the same ControlSource), and change their
Visible properties in the AfterUpdate event procedure of the "other
control".
HTH
- Turtle
"Chris Thompson" <ch*************@homeoffice.gsi.gov.uk> wrote in message
news:19**************************@posting.google.c om...
I have a form where I want a text box to change into a combobox if the
user makes a certain selection in another control. Is this possible
and if so, how?
Thanks in advance for any help offered.