Russell,No and Yes. Not with IIF, but you can do what you want.
Select the cell you want to format, go to Conditional Formatting and base it off of another cell... =(C2="")
(replace C2 with the cell you are checking)
Expression is: [[I]ListBoxFieldName[/I]] is Null
One more question, on this. What if I wanted to do an "AND" expression? If two fields are Null? is that possible?
Expression is: ([[I]Field1[/I]] is Null) And ([[I]Field2[/I][FONT=Verdana]] is Null)[/FONT]
Russell,
I think you may have missed that this question is in the Microsoft Access forum, not the Excel Questions forum!
(though Conditional Formatting is somewhat similar)