I have released the next version of the free Ajax.NET Library . You can download the latest version 184.108.40.206 at http://ajax.schwarz-interactive.de/ .
The new features are:
- System.Web.UI.HtmlControls support as arguments and return value to support client control updates without postbacks
- System.Guid converter
- Cache Ajax.NET request and response using [Ajax.AjaxMethod(seconds)]
The StackOverflowException I got from several developers was the missing support of System.Guid. This should now work, sorry!
There are new examples available at http://ajax.schwarz-interactive.de/  for HtmlControls, Caching and the Namespace Mapping. You have to scroll to the bottom of the page!
Updated: some other small bugfixes for a new version number: version 220.127.116.11 - fixed this.url in class.ashx if server is in root folder - fixed byte, StackOverflowException - changed interface IAjaxObjectConverter, added property ClientScriptIdentifier to remove multiple client scripts