if (System.Web.HttpContext.Current.Items["TokenLogin"] == null)
            {
                var httpCookie = Request.Cookies["PermitidoUtilizarSistemaLog"];
                if (httpCookie != null && ConfigurationManager.AppSettings["tokenPedidoWeb"].Equals(httpCookie.Value))
                {
                    System.Web.HttpContext.Current.Items.Add("TokenLogin", httpCookie.Value);
                    httpCookie.Expires = DateTime.Now;
                }
            }
            else
            {
                if (!System.Web.HttpContext.Current.Items["TokenLogin"].Equals(ConfigurationManager.AppSettings["tokenPedidoWeb"]))
                    return Redirect("acesso");
            }