protected void deliveredButton_Click(object sender, EventArgs e)
        {
            SalesOrderBLL salesOrder = new SalesOrderBLL();

            try
            {
                salesOrder.UpdateSalesOrderOnDelivered(idLabel.Text.ToString());
                MyAlertBox("alert(\"Sales Order Updated Successfully.\"); window.location=\"/UI/SalesOrder/SalesOrderDelivery.aspx\"");
            }
            catch (Exception ex)
            {
                msgbox.Visible = true; msgTitleLabel.Text = "Exception!!!"; msgDetailLabel.Text = ex.Message;
            }
            finally
            {
                salesOrder = null;
            }
        }