>In my case I'm still in TRY/CATCH block, so I get the exception myself. My problem is that I don't know how to show alert or confirm message when I'm already doing server-side.
>
>Say, if your search returns 0 results, you're somehow showing a messagebox (if I'm not mistaken). I don't know how to do this from the server side.
>
>Showing the info in the label (as it is done now) has a problem - the label text has to be cleared once another action is initiated - and I don't know how to achieve this either.

For notification message, I go in a javascript Alert() mode.