public ActionResult Deletecart(int artid)
        {
            try
            {
                if (Session["person"] == null)
                {
                    return(RedirectToAction("Index", "Login"));
                }
                Client cli = (Client)Session["person"];

                s2.DeleteCommande(cli.numClient, artid);


                ViewBag.num       = s2.countCommandeClient(cli.numClient);
                ViewBag.charts    = s2.getCommandeById(cli.numClient);
                ViewBag.totalcart = s2.totalClient(cli.numClient);


                return(RedirectToAction("Index"));
            }
            catch (Exception)
            {
                return(View("Error"));
            }
        }