Trying to use update panel to make textbox onChange event only a partial postback

Set your UpdatePanel to conditional. You can also check this out: http://www.asp.net/learn/ajax-videos/video-177.aspx

-Damien

how would this prevent the post back?

What I mean is, the autopostback is set to true, which allows the onchange event. If I were to take out the autopostback, I have no idea how to create this event.

ok, so I took out the Autopostback="true" and it actually works without postback now.

thanks.

Remove the AutoPostback from those textboxes.