private void btnSubmit_Click(Object sender, EventArgs e)
        {
            string mess = "";

            if (txtUser.Text.Trim() == "")
            {
                mess += "- กรุณาป้อน Username<br/>";
            }

            if (txtPass.Text.Trim() == "")
            {
                mess += "- กรุณาป้อน Password<br/>";
            }

            if (mess == "")
            {
                string          sql = "SELECT * FROM tbl_emp_user join tbl_privilege on privilege_id = emp_user_privilege WHERE emp_user_name ='" + txtUser.Text.Trim() + "' AND emp_user_pass = '******'";
                MySqlDataReader rs  = dBScript.selectSQL(sql);
                if (rs.Read())
                {
                    if (!rs.IsDBNull(0))
                    {
                        //if (rs.GetString("emp_status_login") != "1")
                        //{
                        // Storee Session
                        Session.Add("User", txtUser.Text);
                        Session.Add("UserName", rs.GetString("emp_name"));
                        Session.Add("UserPrivilegeId", rs.GetString("privilege_id"));
                        Session.Add("UserPrivilege", rs.GetString("privilege_name"));
                        if (rs.GetString("privilege_id") == "5")
                        {
                            Session.Add("emp_login_id", rs.GetString("emp_user_id"));
                        }
                        else
                        {
                            Session.Add("emp_login_id", null);
                        }
                        Session.Timeout = 600;

                        // now Storing Cookies & config.
                        HttpCookie newCookie = new HttpCookie("HRSLogin");
                        newCookie["User"]            = txtUser.Text;
                        newCookie["UserName"]        = rs.GetString("emp_name");
                        newCookie["UserPrivilegeId"] = rs.GetString("privilege_id");
                        newCookie["UserPrivilege"]   = rs.GetString("privilege_name");
                        if (rs.GetString("privilege_id") == "5")
                        {
                            newCookie["emp_login_id"] = rs.GetString("emp_user_id");
                        }
                        else
                        {
                            newCookie["emp_login_id"] = null;
                        }
                        newCookie.Expires = DateTime.Now.AddDays(1);
                        Response.Cookies.Add(newCookie);

                        //Page.ClientScript.RegisterStartupScript(Page.GetType(), "Message Box", "<script language = 'javascript'>alert('dd')</script>");
                        dBScript.userLoginUpdate(txtUser.Text);
                        Response.Redirect("/");

                        /*}
                         * else
                         * {
                         *  mess += "- ***ไม่อนุญาติให้มีการเข้าใช้งานด้วยรหัสเดียวกันซ้ำ";
                         * }*/
                    }
                    else
                    {
                        mess += "- Username หรือ Password ไม่ถูกต้อง";
                    }
                }
                else
                {
                    mess += "- Username หรือ Password ไม่ถูกต้อง";
                }
            }

            if (mess != "")
            {
                MsgBox(mess);
            }
            else
            {
                msgBox.Text = "";
            }
        }