public async Task <ActionResult> Login(LoginViewModel model, string returnUrl)
        {
            if (!ModelState.IsValid)
            {
                return(View(model));
            }

            // This doesn't count login failures towards account lockout
            // To enable password failures to trigger account lockout, change to shouldLockout: true
            var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout : false);

            switch (result)
            {
            case SignInStatus.Success:
                ApplicationUser user = UserManager.FindByEmail(model.Email);
                //validate the user is not on-hold
                if (!AppUserHelpers.IsAppUserActive(user))
                {
                    EntityStatusEnum appUserStatus = AppUserHelpers.GetAppUserEntityStatus(user);
                    switch (appUserStatus)
                    {
                    case EntityStatusEnum.Inactive:
                        ModelState.AddModelError("", "This user is currently inactive.  You will need to re-register or contact your account administrator");
                        break;

                    case EntityStatusEnum.OnHold:
                        ModelState.AddModelError("", "This user is currently on hold.  You will need to contact your account administrator to active your account");
                        break;
                    }
                    AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);
                    return(View(model));
                }
                else
                {
                    return(RedirectToAction("Index", "Home"));
                }

            case SignInStatus.LockedOut:
                return(View("Lockout"));

            case SignInStatus.RequiresVerification:
                return(RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe }));

            case SignInStatus.Failure:
            default:
                ModelState.AddModelError("", "Invalid login attempt.");
                return(View(model));
            }
        }