public ActionResult Login(UserLoginViewModel viewModel)
        {
            if (TryUpdateModel(viewModel)) {
                bool result = Membership.ValidateUser(viewModel.Username, viewModel.Password);
                if (result) FormsAuthentication.SetAuthCookie(viewModel.Username, false);

                return RedirectToAction("SelectCustomers","Mail");
            }

            return View(viewModel);
        }
 public ActionResult Login()
 {
     UserLoginViewModel viewModel = new UserLoginViewModel();
     return View(viewModel);
 }