public ActionResult Login(Account acc, string returnUrl) { var db = new QLBSDBcontext(); var model = db.Accounts.Where(t => t.Username == acc.Username && t.Password == acc.Password).ToList().Count(); if (ModelState.IsValid) { if (model == 1) { FormsAuthentication.SetAuthCookie(acc.Username, true); return(RedirectToLocal(returnUrl)); } } return(View(acc)); }