I am wondering if RegisterTypeForAjax isn't working correctly. I am getting the error noted at the end of the code block below. Sample is from here: http://www.ajaxtutorials.com/asp-net-ajax-quickstart/tutorial-introduction-to-ajax-in-asp-net-2-0-and-c/

Any ideas as to why I'm getting this error? Thanks.

ASP .NET 2.0 C#

Here is the code-behind:

using System; using System.Data; using System.Data.SqlClient; using System.Configuration; using System.Collections; using System.Collections.Generic; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls;

using AjaxPro;

namespace WebApplication1 { public partial class Ajax_CSharp : System.Web.UI.Page { protected override void OnInit( EventArgs e ) { base.OnInit( e ); Load += new EventHandler( Page_Load ); }

    protected void Page_Load( object sender, EventArgs e )
    {
        Utility.RegisterTypeForAjax( typeof( Ajax_CSharp ) );
    }

    [ AjaxMethod( HttpSessionStateRequirement.ReadWrite ) ]
    public string GetData()
    {
        // method gets a row from the db and returns a string.
    }

}

Here is the ASPX page:

<%@ Page Language="C#" AutoEventWireup="false" CodeBehind="Default.aspx.cs" Inherits="WebApplication1.Ajax_CSharp" %>

Untitled Page function GetData() { var response; Ajax_CSharp.GetData( GetData_CallBack ); }

   function GetData_CallBack( response )
   {
      var response = response.value;

      if ( response == "Empty" )
      {
         alert( "No Record Found." );
      }
      else if ( response == "Error" )
      {
         alert( "An Error Occurred in Accessing the Database !!!" );
      }
      else
      {
         var arr = response.split( "~" );
         var empID = arr[0].split( "," );
         var empName = arr[1].split( "," );

         document.getElementById( 'dlistEmployee' ).length = 0;

         for ( var i = 0; i < empID.Length; i++ )
         {
            var o = document.createElement( "option" );
            o.value = empID[i];
            o.text = empName[i];
            document.getElementById( 'dlistEmployee' ).add( o );
         }
      }
   }

   function dodisplay()
   {
      var selIndex = document.getElementById( "dlistEmployee" ).selectedIndex;
      var empName = document.getElementById( "dlistEmployee" ).options( selIndex ).text;
      var empID = document.getElementById( "dlistEmployee" ).options( selIndex ).value;

      document.getElementById( "lblResult" ).innerHTML = "You have selected " + empName + " (ID: " + empID + " )";
   }

</script>

Run it and click on the button and I get this error:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2; MS-RTC LM 8) Timestamp: Mon, 26 Apr 2010 17:22:44 UTC

Message: 'Ajax_CSharp' is undefined Line: 13 Char: 11 Code: 0 URI: http://localhost:4678/Default.aspx