C# 无法登录到asp.net mvc web应用程序

我有以下

Login

方法（

POST

）为用户登录

    [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("MainDashboard", "Home", model);
        }
    }

---

如果我正在阅读您试图正确执行的操作，那么您希望在登录后转到MainDashboard。如果是这种情况，那么登录ActionResult的逻辑应该如下所示：

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
    // Return to Login View if there is an invalid model submitted (with errors displayed)
    if (!ModelState.IsValid)
    {
        return View(model);
    }
    // Attempt to Login
    var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
    switch (result)
    {
        // If Login is successful
        case SignInStatus.Success:
            // Go to the returnUrl if there is a returnUrl (used when User has been automatically signed out or has tried to hit an unauthorized page)
            if(!string.IsNullOrEmpty(returnUrl))
            {
                return RedirectToLocal(returnUrl);
            } else
            {
               // Go to MainDashboard if there is no returnUrl and Login is successful (without referencing the LoginViewModel)
                return RedirectToAction("MainDashboard", "Home");
            }

        case SignInStatus.LockedOut:
            return View("Lockout");
        case SignInStatus.RequiresVerification:
            return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
        case SignInStatus.Failure:
        default:
            // If Login has failed, and it's not due to a Lockout and not because the User has to Verify the Registration code on Registration
            // Return to the Login View with errors
            ModelState.AddModelError("", "Invalid login attempt.");
            return View(model);
    }
}

[HttpPost]
[异名]
[ValidateAntiForgeryToken]
公共异步任务登录（LoginView模型，字符串返回URL）
{
//如果提交的模型无效（显示错误），则返回登录视图
如果（！ModelState.IsValid）
{
返回视图（模型）；
}
//尝试登录
var result=wait SignInManager.PasswordSignInAsync（model.Email、model.Password、model.RememberMe、shouldllockout:false）；
开关（结果）
{
//如果登录成功
案例标志状态成功：
//如果存在returnUrl，请转到returnUrl（当用户已自动注销或试图访问未经授权的页面时使用）
如果（！string.IsNullOrEmpty（returnUrl））
{
返回重定向到本地（returnUrl）；
}否则
{
//如果没有返回URL且登录成功（不参考LoginViewModel），请转到MainDashboard
返回重定向到操作（“主仪表板”、“主页”）；
}
案例标志状态锁定输出：
返回视图（“锁定”）；
案例标志状态。要求验证：
return RedirectToAction（“SendCode”，new{ReturnUrl=ReturnUrl，RememberMe=model.RememberMe}）；
案例信号状态故障：
违约：
//如果登录失败，并且不是由于锁定，也不是因为用户必须在注册时验证注册码
//返回到登录视图，但出现错误
AddModelError（“，”登录尝试无效“）；
返回视图（模型）；
}
}

---

此外，显然，请确保主控制器中有MainDashboard的视图和控制器操作。我可能读错了您想要的内容，但如果这是您想要实现的，那么这是一种可以实现的方法。

问题不在于登录。PasswordSignInAsync可能返回失败，但随后返回错误ViewResult@tmg调试后，我可以看到

var result

变得失败，这是什么原因？

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
    // Return to Login View if there is an invalid model submitted (with errors displayed)
    if (!ModelState.IsValid)
    {
        return View(model);
    }
    // Attempt to Login
    var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
    switch (result)
    {
        // If Login is successful
        case SignInStatus.Success:
            // Go to the returnUrl if there is a returnUrl (used when User has been automatically signed out or has tried to hit an unauthorized page)
            if(!string.IsNullOrEmpty(returnUrl))
            {
                return RedirectToLocal(returnUrl);
            } else
            {
               // Go to MainDashboard if there is no returnUrl and Login is successful (without referencing the LoginViewModel)
                return RedirectToAction("MainDashboard", "Home");
            }

        case SignInStatus.LockedOut:
            return View("Lockout");
        case SignInStatus.RequiresVerification:
            return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
        case SignInStatus.Failure:
        default:
            // If Login has failed, and it's not due to a Lockout and not because the User has to Verify the Registration code on Registration
            // Return to the Login View with errors
            ModelState.AddModelError("", "Invalid login attempt.");
            return View(model);
    }
}