//
    // POST: /Account/Login
    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    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:
                return RedirectToLocal(returnUrl);
            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);
        }
    }

//
    // Summary:
    //     Sign in the user in using the user name and password
    //
    // Parameters:
    //   userName:
    //
    //   password:
    //
    //   isPersistent:
    //
    //   shouldLockout:
    [AsyncStateMachine(typeof(SignInManager<,>.<PasswordSignInAsync>d__29))]
    [DebuggerStepThrough]
    public virtual Task<SignInStatus> PasswordSignInAsync(string userName, string password, bool isPersistent, bool shouldLockout);