public ActionResult Index(AdminUser user) { if (ModelState.IsValid) { var adminUser = adminUserRepository.GetAdminUserByUser(user); if (adminUser != null) { FormsAuthentication.SetAuthCookie(user.Username, false); Session["loggidin_account"] = user; return(RedirectToAction("AdminSelection")); } else { ModelState.AddModelError("login-error", "The username or password provided is incorrect."); } } return(View()); }