“ASP.NET AJAX / UpdatePanel aren’t working…” – this is probably the number one complaint/question found on the ASP.NET AJAX Forums. I decided it would probably be a good idea to discuss some of the common issues I’ve seen: xhtmlConformance – This is a common gotcha as described in detail on Scott Guthrie’s blog. <xhtmlConformance mode=”Legacy” /> will [...]
Monthly Archives: September 2007
HTML Parsing – HTML Agility Pack
I’ve seen some posts of users asking about parsing HTML in .NET. Lots of people use RegEx which is OK, but wouldn’t it be nice to use XPath. Problem with this is that most sites have mangled HTML not even close to XHTML which is needed to utilize XML tools. It peaked my interest, so [...]
Theme Error when Themes are disabled?
I received an interesting error today when I tried to create a WebForm which didn’t have any content on it. Using themed css files requires a header control on the page. (e.g. <head runat=”server” />). Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more [...]
Modal UpdateProgress for UpdatePanel
If you are interested in this topic, you should check out the new post: "Modal UpdateProgress for UpdatePanel – Revisited" on this topic. The solution in this post had some issues that have been corrected in the new post. I’ve seen a lot of requests on the ASP.NET forums for ways to display disable an [...]

AJAX Control Toolkit – Tab Control – Themes
There seems to be a lot of issues on the ASP.NET Forums with “Theming” the AJAX Control Toolkit’s Tab Control. There are lots of requests for samples (one example), but there are limited resources out there. Looking at the Tabs sample page, you will find information on Theming, but it’s pretty basic. You will find [...]