Hi Cathi,

Thanks for the tip, I actually tried that but got the same error. I think I may have found the answer. Apparently not all web form controls can be used with a validator control. Calendar is one of them. I need to extend the web form control class and add a ValidationProperty attribute. I got this from the MS Knowledge base article Q310082. I tried the workaround they suggest but I am getting a server tag unknown error. Not sure if my Register directive is working correctly.

Thanks,

Rodney