How to Show Dataset or DataGrid using Customise AJAX

Javascript:

<script type ="text/javascript">

var AjaxServerPageName = "AjaxServer.aspx?id=1";

function CreateXmlReq()

{

    try

    {

         XmlReq = new ActiveXObject("Msxml2.XMLHTTP");

    }

    catch(e)

    {

         try

         {

             XmlReq = new ActiveXObject("Microsoft.XMLHTTP");

         }

         catch(oc)

         {

             XmlReq = null;

         }

    }

    if(!XmlReq && typeof XMLHttpRequest != "undefined")

    {

         XmlReq = new XMLHttpRequest();

    }

}

function HandleResponse()

{

    if(XmlReq.readyState == 4)

    {

         if(XmlReq.status == 200)

         {      

// This Line is Very important.

            document.getElementById("GridData").innerHTML = XmlReq.responseText;

         }

         else

         {

             alert("There was a problem retrieving data from the server." );

         }

    }

}

function FetchDGContents()

{

    var requestUrl = AjaxServerPageName;

    CreateXmlReq();

    if(XmlReq)

    {

         XmlReq.onreadystatechange = HandleResponse;

         XmlReq.open("GET", requestUrl, true);

         XmlReq.send();      

    }

--------------------------------------------------------------------

Call This Function on AjaxServer.aspx.cs Load Event

public void ConvertHTML(DataSet ds)

    {

        using (StringWriter sw = new StringWriter())

        {

            using (HtmlTextWriter htw = new HtmlTextWriter(sw))

            {

                string srtMsg;

                // instantiate a datagrid 

                DataGrid dg = new DataGrid();

                dg.DataSource = ds.Tables[0];

                dg.HeaderStyle.BackColor = System.Drawing.Color.Gray;

                dg.HeaderStyle.Font.Name = "Tahoma";

                dg.HeaderStyle.Font.Size = 12;

                dg.HeaderStyle.ForeColor = System.Drawing.Color.White;

                dg.DataBind();

                dg.RenderControl(htw);

                srtMsg = sw.ToString();

                ds.Clear();

                Response.Clear();

                Response.ContentType = "text/HTML";

                Response.Write(srtMsg);

                Response.End();

            }

        }

    }

</script>