User Control validation group issue

Question

I have two instances of a user control on a page. Both have fields and one submit button.

I have set validation groups on the fields and validators but for some reas

Answer 1

This method also works:

Dim valGroup = String.format("{0}-validation", Guid.NewGuid())

rfv001.ValidationGroup = valGroup
rfv002.ValidationGroup = valGroup
rfv003.ValidationGroup = valGroup
rfv004.ValidationGroup = valGroup
rfv005.ValidationGroup = valGroup

btnSubmit.ValidationGroup = valGroup

You only need to set the values for the ValidationGroup manually.