You could use the linkbutton control instead that supports an action event.
With the hyperlink control you could add a querystring parameter to the NavigateURL property which would id which one was selected.
>Hi all,
>
>Given that there are two hyperlinks pointing to the same page. I want to know which hyperlink was clicked to get to the page so I can conditionally add/remove a RequiredFieldValidator control on the target page.
>
>TIA.
Michael McLain