How to add Ajax Rating in a grid

<asp:TemplateField HeaderText="Click to Rate">
<ItemTemplate>
<ajax:Rating ID="ajaxrating" AutoPostBack="true" OnChanged="RatingControlChanged" runat="server" StarCssClass="ratingEmpty" WaitingStarCssClass="ratingSaved" EmptyStarCssClass="ratingEmpty" FilledStarCssClass="ratingFilled">
</ajax:Rating>
<asp:label ID="lblrating" runat="server"/>
</ItemTemplate>
</asp:TemplateField>

<script>
        function GridViewRowChecked(what) {
            var Ctl = new RegExp("ctl\\d+") // this regular expression will get the line nubmer with the ctl prefix
            //which is put automatically by ASP.NET for GridViews and DataGrids ;
            var LineNumber = Ctl.exec(what.name).toString();
            //get the control names to operate on:
            var txtProduct = document.getElementById("grd1_" + LineNumber + "_lblProgName");

            //set Product textbox to readonly or not accroding to the checkbox check:
            if (what.checked) {
                //in order to accomodate for IE and other browsers I set the readonly attribute in two ways:
                txtProduct.setAttribute("readonly", "none");
                txtProduct.readOnly = false;
                //it's not worth it to use Ifs to determine which browser it is cuz it will only slow id down

            }
            else {
                txtProduct.setAttribute("readonly", "readonly");
                txtProduct.readOnly = true;
            }
        }
    </script>

protected void RatingControlChanged(object sender, AjaxControlToolkit.RatingEventArgs e)
    {
        AjaxControlToolkit.Rating myRating = (AjaxControlToolkit.Rating)sender;
        System.Text.RegularExpressions.Regex rexLineNo = new System.Text.RegularExpressions.Regex("ctl\\d+");
        string progid = this.ProgrameID(rexLineNo.Match(myRating.UniqueID).ToString());

        con.Open();
        SqlCommand cmd = new SqlCommand("insert into RatingDetails(ProgrammeID, Rating, machine_ip)values(@id,@Rating,@ip)", con);
        cmd.Parameters.AddWithValue("@id", progid);
        string temp = myRating.CurrentRating.ToString();
        cmd.Parameters.AddWithValue("@Rating", Convert.ToInt32(temp));
        cmd.Parameters.AddWithValue("@ip", ip.Text);
        cmd.ExecuteNonQuery();
        con.Close();
        BindRatingControl();
        UpdateRating();
        con.Close();
        cls.MsgBox("Thank you for rate this programme", this.Page);
    }
    public string ProgrameID(string LineNo)
    {
        foreach (GridViewRow r in this.grd1.Rows)
        {
            Label lblProgID = (Label)r.FindControl("lblProgID");
            if (lblProgID.UniqueID.Contains(LineNo))
            {
                return lblProgID.Text;
            }
        }
        return string.Empty;
    }
    protected void BindRatingControl()
    {
        int total = 0;
        DataTable dt1 = new DataTable();
        con.Open();
        SqlCommand cmd1 = new SqlCommand("Select * from ProgrammeSchedule", con);
        SqlDataAdapter da1 = new SqlDataAdapter(cmd1);
        da1.Fill(dt1);
        for (int p = 1; p <= dt1.Rows.Count; p++)
        {
            DataTable dt = new DataTable();
            //con.Open();
            SqlCommand cmd = new SqlCommand("Select Rating from RatingDetails where ProgrammeID=" + p, con);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            da.Fill(dt);
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    total += Convert.ToInt32(dt.Rows[i][0].ToString());
                }
                int average = total / (dt.Rows.Count);
                //AjaxControlToolkit.Rating myRating = e.Row.FindControl("ajaxrating") as AjaxControlToolkit.Rating;
                //ajaxrating.CurrentRating = average;
                //lblrating.Text = dt.Rows.Count + "user(s) have rated this programme";
            }
        }
        con.Close();
    }