Register Ajax on asp.net page

1. Add Reference "Ajax.dll".

2. Write To Register.

    <httpHandlers>
            <remove verb="*" path="*.asmx"/>
            <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
      <!-- Add This To Register Ajax. -->
      <add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax"/>
        </httpHandlers>
      
3. On Page

using Ajax;


4. Page_Load
public partial class ProgramFiles_Administration_Modules : System.Web.UI.Page
Ajax.Utility.RegisterTypeForAjax(typeof(ProgramFiles_Administration_Modules));

5.

[Ajax.AjaxMethod]
    public string InsertValues(string hID)
    {
        string myVal= hid+" is Fine.";
        return myVal.ToString();
    }
   
6.  Call C# Method Form Aspx.

Add jquery-1.4.1.min.js

 <script type="text/javascript">
   
        var count=1;
       
        function EEEE(ddlvalue)
        {
            var response = ProgramFiles_Administration_Modules.InsertValues(ddlvalue);
        }
    </script>       
** NOTE:   ajax method must be public.

Cheers!!!