How to check if drop-down list is empty, i.e. no item has been chosen

Use this code in the change or exit event:

Thank you for a prompt reply, but unfortunately it did not work, neither did

if (form1.Main_subform.Caption_subform.LocationDDList.rawValue == "")

(Tried it just to eliminate possibilities). The messagebox that is supposed to appear if the condition in the if-sentence is true never shows, and nothing happens (no fields in the form are made visible).

I have placed this code in a function that is called from the change-event in another drop-down menu. I'm currently running a similar code from the same change-event, that checks if a choice is made in a radio button list (but instead of checking whether the radio button list is "empty", I reverse the procedure and check if the radio button chosen is NOT one of the possible radio button choices), which works fine. I also had problems finding out how to check if a radio button list was empty, that's why I reversed the code. But this is not as easily done in the drop down list, since I have many more possible choices there.

Option boxes, cobo or list, require a unique string entry for each option, and logically a 'no option' is and 'option'. You will have to enter at least one space and you can test for that value.

Adding an "empty" choice worked, thanks! :-)