ChiakiYu.Web.Controllers.AccountController.Login C# (CSharp) Method

        public virtual ActionResult Login(LoginViewModel model)
        {
            if (!ModelState.IsValid)
                return View(model);
            var user = model.AsUser();
            var userLoginStatus = _userService.ValidateUser(user.UserName, user.Password);
            switch (userLoginStatus)
            {
                case UserLoginStatus.Success:
                    user =
                        _userService.GetAll()
                            .FirstOrDefault(
                                n =>
                                    n.UserName == user.UserName || n.AccountEmail == user.UserName ||
                                    n.AccountMobile == user.UserName);
                    break;
                case UserLoginStatus.IsNotExist:
                    TempData["StatusMessageData"] = "账号不存在！";

                    break;
                case UserLoginStatus.InvalidCredentials:
                    TempData["StatusMessageData"] = "帐号或密码错误，请重新输入！";

                    break;
                case UserLoginStatus.NotActivated:
                    TempData["StatusMessageData"] = "账号未激活！";

                    break;
                case UserLoginStatus.Banned:
                    TempData["StatusMessageData"] = "账号被封禁！";

                    break;
                case UserLoginStatus.UnknownError:
                    TempData["StatusMessageData"] = "未知错误，请重试！";
                    break;
                default:
                    TempData["StatusMessageData"] = "未知错误，请重试！";

                    break;
            }

            if (userLoginStatus != UserLoginStatus.Success) return View(model);
            FormsAuthentication.SignOut();

            var adminCookie = new HttpCookie("ChiakiCookie" + user.Id) {Value = UserPasswordHelper.MD5(true.ToString())};
            if (!string.IsNullOrEmpty(FormsAuthentication.CookieDomain))
                adminCookie.Domain = FormsAuthentication.CookieDomain;
            adminCookie.HttpOnly = true;

            Response.Cookies.Add(adminCookie);
            FormsAuthentication.SetAuthCookie(user.UserName, model.RememberMe);

            if (string.IsNullOrWhiteSpace(model.ReturnUrl))
            {
                return RedirectToAction(MVC.Channel.Home());
            }
            return Redirect(model.ReturnUrl);
        }