In this time CMSN Software has decided to provide a little bit of advance tutorial. "How to use Ajax auto complete in asp.net" simply shows you how to implement auto complete text box in ASP.Net. Technically we are passing value to server side using simple Ajax request and then search inside a xml file using Linq to xml. Then format and display the response as a auto complete suggestions. As usual in this tutorial also CMSN Software shows how to use multiple technologies to accomplish same task.