https://www.dotnetzone.gr:443/cs/blogs/dotnetrules/archive/2011/05/25/introduction-to-asp-net-ajax-controls.aspxThis is going to be my first post on Ajax (Asynchronous Javascript and XML) and Ajax controls. Ajax is my favourite technology and I use it a lot when I build ASP.Net applications. This is going to be a beginner's level post on Ajax in ASP.Net applications...(elCommunityServer 2.1 SP3 (Build: 20423.1)