I want to check if at least one of my two textboxes has an entered value....
If none of them has a value, I want a validator to show an errormessage....

How do I do that?

You can implement a CustomValidator.  Drag it onto your web form from
the toolbox.  The handle the ServerValidate and in that method set the
args.IsValid property based on your logic.

http://msdn2.microsoft.com/en-us/library/9eee01cx.aspx

Brennan Stehling
http://brennan.offwhite.net/blog/


Tigers21 wrote:
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