How to display an ASPX in another ASPX's DIV dynamically at runtime?

Question

Here is what I am trying to do in ASP.NET:

Create one page called Main.aspx. This page has a DIV and a buttons.

The browser loads Main.aspx. Then when I clic

Answer 1

Update

Thanks @GµårÐïåñ for the heads up.

The UFrame seems to have been archived and no longer actively developed and given the number of posts about errors that have gone unanswered.

Original Answer

Maybe I'm missing something. But you can use UFrame in this case.

http://msmvps.com/blogs/omar/archive/2008/05/24/uframe-goodness-of-updatepanel-and-iframe-combined.aspx (No longer works)