A few days ago I discovered DelvingWare's AsyncControls after trying a number of other AJAX-y approaches -- this was the only thing I found that enabled me to do what I wanted, especially with their radio buttons. I'm very impressed with it, but it doesn't seem to be under active development any more.
Basically, if I do a Server.Transfer() from a regular System.Web.UI.Page to a DelvingWare.AsyncControls.AsyncPage, I get an "Error occured during AsyncInvocation" displayed at the top of the new page.
I only have one page (out of about 100) that does the AJAX-y stuff and which thus uses those controls. But since this is the "summary page" that all the other pages eventually get to, it's a very important one.
Fine, so I went and changed all the other classes to inherit from AsyncPage instead of Page. But now one of the intro pages -- which does a fingerprint read through an .NETified ActiveX control (called Web-Key, by Bio-Key) -- doesn't work when that page is inherited from AsyncPage.
So that means I either have a non-functioning fingerprint-read page, or the fingerprint reader works but I get that error.
Any advice?
Anyone else here using DelvingWare.AsyncControls?