Access Label value modifed using jQuery on Server Side in ASP.Net

my html to get total in gridview is 

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
        <script type="text/javascript">
            $(function () {
                $("[id*=txtQuantity]").val("0");
            });
            $("[id*=txtQuantity]").live("keyup", function () {
                if (isNaN(parseInt($(this).val()))) {
                    $(this).val('0');
                } else {
                    $(this).val(parseInt($(this).val()).toString());
                }
            });
            $("[id*=txtQuantity]").live("keyup", function () {
                if (!jQuery.trim($(this).val()) == '') {
                    if (!isNaN(parseFloat($(this).val()))) {
                        var row = $(this).closest("tr");
                        $("[id*=lblTotal]", row).html(parseFloat($(".price", row).html()) * parseFloat($(this).val()));
                    }
                } else {
                    $(this).val('');
                }

                /*var totalQuantity = 0;
                $("[id*=txtQuantity]").each(function () {
                    totalQuantity = totalQuantity + parseInt($(this).val());
                });
                $("[id*=lblTotalQuantity]").html(totalQuantity.toString()); */

                var grandTotal = 0;
                $("[id*=lblTotal]").each(function () {
                     grandTotal = grandTotal + parseFloat($(this).html());
                     //grandTotal = grandTotal +grandTotal;
                });
                $("[id*=lblGrandTotal]").html(grandTotal.toString());
            });
        </script>

my code to save data in database is 

foreach (GridViewRow row in gvSelected.Rows)
        {
            string Inv = txtNo.Text.Trim();
            DateTime SDate = DateTime.Now;            
            Label Code = row.FindControl("lblCode") as Label;
            string Qty = (row.FindControl("txtQuantity") as TextBox).Text;
            Label Tot = row.FindControl("lblTotal") as Label;
                      
            con.SqlQuery("Insert Into tblItemSold (InvoiceNo,ItemCode,Price,Quantity,GrandTotal,SDate) VALUES (@Inv,@Code,@Price,@Qty,@GT,@Date)");
            con.Cmd.Parameters.AddWithValue("@Inv", Inv);
            con.Cmd.Parameters.AddWithValue("@Code", Code.Text);
            con.Cmd.Parameters.AddWithValue("@Price", row.Cells[2].Text);
            con.Cmd.Parameters.AddWithValue("@Qty", Qty);
            con.Cmd.Parameters.AddWithValue("@GT", Tot.Text);
            con.Cmd.Parameters.AddWithValue("@Date", SDate.ToString("dd.MM.yyyy"));
            con.NonQueryEx();
        }

it is not inserting Column value of Name Total. Pic is attached