protected void btAddApprover_Click(object sender, EventArgs e)
        {
            try
            {
                if (!isUpdate())
                {
                    sec      = new CoQuanLuuTru();
                    sec.Name = tbxName.Text;
                    sec.Code = tbxCode.Text;
                }
                else
                {
                    sec.Name = tbxName.Text;
                    sec.Code = tbxCode.Text;
                }
                if (!isUpdate())
                {
                    if (validateSecurity(sec))
                    {
                        um.addCoQuanLuuTru(sec);
                        tbxCode.Text = "";
                        tbxName.Text = "";
                    }
                    else
                    {
                        Logger.logmessage(classobject, "btAddApprover_Click", "Validate fail 4 inssert");
                    }
                }
                else if (um.validateSecCode4Update(sec.Code, sec.ID))
                {
                    um.updateCoQuanLuuTru(sec);
                    tbxCode.Text = "";
                    tbxName.Text = "";
                }
                else
                {
                    Logger.logmessage(classobject, "btAddApprover_Click", "Validate fail 4 update");
                }

                Session[Su_CoQuanLuuTruLogic.SESSION_SEC_ID] = null;
                Response.Redirect("QLCoQuanLuuTru.aspx", false);
            }
            catch (Exception ex)
            {
                Logger.logmessage(classobject, "btAddApprover_Click", ex.Message + ex.StackTrace);  Response.Redirect("~/ThongBaoLoi.aspx", false);
            }
        }