Load user control with Jquery Ajax call

I am trying to insert a user control on a page using JQuery

My Page looks like this

<asp:Content ID="Body" ContentPlaceHolderID="开发者_如何学JAVAbody" runat="server">    
    <div id="Container">

    </div>

    <script type="text/javascript" language="javascript">

       function LoadUserControl(tabName) {
           $.ajax({
               type: "POST",
               url: ("TestHK.aspx?Show=" + tabName),
               success: function (html) {
                   document.getElementById('Container').innerHTML = html;                  
               },
               error: function (msg) {
                   alert('error' + msg);
               }
           });
        }

</asp:Content>

And on the code behind I have

 protected void Page_Load(object sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(Request.QueryString["Show"]))
            {
                GetControlHtml("~/userControls/TreeViewAreas.ascx");              
            }
        }

    public void GetControlHtml(string controlLocation)
    {
        var page = new Page();
        var userControl = (TreeViewAreas)page.LoadControl(controlLocation);
        userControl.ButtonIsVisible = true;
        userControl.HousekeeperId = 7190;
        userControl.AreasCovered  = new HousekeeperBusiness().GetAreas(7190);            
        page.Controls.Add(userControl);
        using (var textWriter = new StringWriter())
        {
            HttpContext.Current.Server.Execute(page, textWriter, false);
            Response.Write(textWriter.ToString());
            Response.End();    
        }                       
    }

But I am always getting

Error executing child request for handler 'System.Web.UI.Page'.

What am I doing wrong?

Thanks

I believe you won't be adding an UserControl with a simple AJAX mechanism.

This is a good case for using an UpdatePanel, because you'll add new controls and the page will show them.

Note I don't think UpdatePanel as a good option, but I believe that it meets your requirement.

This is what you want. http://weblogs.asp.net/sanjeevagarwal/archive/2008/07/22/Dynamically-create-ASP.NET-user-control-using-ASP.NET-Ajax-and-Web-Service.aspx

Enjoy.