protected void Button1_Click(object sender, EventArgs e)
        {
            int id = Convert.ToInt32(txtReschedule.Text);

            try {
                var res = b.CheckTicketID(id);

                if (res == false)
                {
                    Response.Write("Invalid Ticket ID");
                    txtReschedule.Text = "";
                }
                else
                {
                    Session["TicketID"] = Convert.ToInt32(id);
                    Response.Redirect("UpdateTicket.aspx");
                }
            } catch (Exception ex)
            {
                throw ex;
            }
        }