public ActionResult Login2(Authentification lg) { if (ModelState.IsValid) { using (Manage_BooksEntities conex = new Manage_BooksEntities()) { var mk = conex.Authentifications.Where(a => a.User_Name.Equals(lg.User_Name) && a.Password_cle.Equals(lg.Password_cle)).FirstOrDefault(); if (mk != null) { Session["UserId"] = mk.User_Name.ToString(); return(RedirectToAction("mapage")); } } } return(View(lg)); }