C# Web App not working (or is it?)

Hi everyone!

I have a C# .NET web app where I'm trying to auto-complete a texbox with computer names pulled from Active Directory using AutoCompleteExtender in the Ajax Control Toolkit. The app seems to work fine but is not auto-completing. Can someone review this code and let me know if you see the problem? I don't and there are no errors within VS 2010 either. Ports are open between AD and
I am pasting my code below if you want to try on your own... Help?

HTML:

Code:

---

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="OpenJob.aspx.cs" Inherits="HostControl.OpenJob" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <ajaxToolkit:ToolkitScriptManager ID="ScriptManager1" runat="server">
    </ajaxToolkit:ToolkitScriptManager>
    <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
    <ajaxToolkit:AutoCompleteExtender ID="AutoCompleteExtender1"
        runat="server" TargetControlID="txtUserName" ServiceMethod="findUser"
        ServicePath="activeDirectorySearch.asmx">
    </ajaxToolkit:AutoCompleteExtender>
&nbsp;&nbsp;
    <asp:Button ID="btnGetInfo" runat="server" Text="Get Info" />
    <br />
    <asp:Label ID="lblEmail" runat="server" Text="Email Address:"></asp:Label>
    <asp:Label ID="lblEmailResult" runat="server" Text="Label"></asp:Label>
    <br />
    <asp:Label ID="lblPhone" runat="server" Text="Phone Number:"></asp:Label>
    <asp:Label ID="lblPhoneResult" runat="server"></asp:Label>
&nbsp;
</asp:Content>

---

PAGE ASPX DESIGNER CODE:

Code:

---

namespace HostControl {
    public partial class OpenJob {
        protected global::AjaxControlToolkit.ToolkitScriptManager ScriptManager1;
        protected global::System.Web.UI.WebControls.TextBox txtUserName;
        protected global::AjaxControlToolkit.AutoCompleteExtender AutoCompleteExtender1;
        protected global::System.Web.UI.WebControls.Button btnGetInfo;
        protected global::System.Web.UI.WebControls.Label lblEmail;
        protected global::System.Web.UI.WebControls.Label lblEmailResult;
        protected global::System.Web.UI.WebControls.Label lblPhone;
        protected global::System.Web.UI.WebControls.Label lblPhoneResult;
    }
}

---

CODE BEHIND:

Code:

---

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Services;

namespace HostControl
{
    public partial class OpenJob : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
           
        }
    }
}

---

Web Service Code (*.asmx):

Code:

---

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.DirectoryServices;

[WebService(Namespace = "http://localhost/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService()]
public class activeDirectorySearch : System.Web.Services.WebService
{

    [WebMethod()]
    public string[] findUser(string prefixText)
    {
        DirectoryEntry directory = new DirectoryEntry("LDAP://RootDSE");
        var defaultNamingContext = directory.Properties["defaultNamingContext"].Value.ToString();
        string filter = "(&(cn=*" + prefixText + "*)(!objectClass=user))";

        string[] strCats = { "cn" };
        List<string> items = new List<string>();
        DirectorySearcher dirComp = new DirectorySearcher(directory, filter, strCats, SearchScope.Subtree);
        SearchResultCollection results = dirComp.FindAll();
        //string strOut = null;
        foreach (SearchResult result in results)
        {
            foreach (DictionaryEntry prop in result.Properties)
            {
                if (prop.Key.Equals("cn"))
                {
                    System.Collections.IEnumerable propsEnum = prop.Value as System.Collections.IEnumerable;
                    foreach (object individualValue in propsEnum)
                    {
                        items.Add(individualValue.ToString());
                    }
                }
            }
        }

        return items.ToArray();
        results.Dispose();
    }
}

---

MS Visual Web Developer 2010 Express
.NET 4.0

Sorry! ; )