I'm still learning the ins and outs of VFP (having recently made the switch from Clipper).

I was just playing around with a textbox control that is bound to a field in a table. I put a field-level rule expression (a UDF actually) in the DBC and noticed that when it fails I get an ugly "stock" VFP error message. So I added my own text in the message box in the DBC. This is better but still not perfect. Then I pondered the possibilty that my validation UDF may actually require different error messages based on the data entered. I took the message out of the DBC and put it in my UDF. Now I'm getting my error and the ugly VFP one. So then I shifted to the Valid event hoping that I could validate using DBGETPROP and retrieving the field-level rule expression. The problem is that it appears the field-level rule is triggered before the textbox's valid.

What should my approach be to this sort of situation?

TIA