Dear All:
I'm just now very confused with the validation of a lookup control. I've tried a lot of formulas but they don't work. Here is:
I have one lookup control linked with a mandatory field:
"ZonaSubzona" is mandatory field:
- Without validation rule, in you don't choose an item in the lookup, the field will be empty and nothing happens.
- Using a validation rule in the lookup control, like:
(esnuloOEstaVacío means IsNullOrEmpty)
- Another formula like {Self}=="", it doesn't work
- Using validation into control properties, it doesn't work
If someone can help me I promise to invite him a beer here in Spain...
Have a nice day!