Web.UI vNext (preview build included in attached project packages) will include, among other things, a new feature of the CallBack control which will allow it to become extremely useful for integrating AJAX functionality in web applications build on Microsoft’s new ASP.NET MVC framework. About...

With the growing proliferation of Microsoft's ASP.NET AJAX, we are often asked by customers whether our CallBack control is intended as a replacement for UpdatePanel, or alternatively, whether UpdatePanel makes the CallBack control obsolete. To address these questions, I feel I should try to clear...