how to design a ajax for a textbox as calendar control with

hi
include ajax dll in your project

include fallowing statement where ever you want the calender for textbox

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="AjaxToolKit" %>

fallowing statement is assigning ajax calender to text box

 
                                            Format="dd/MM/yyyy">
                   

chech this attached smaple using ajax control toolkit in ASP.net