在 MVC 控制器中的 ReturnRedirectToAction 的情况下调用 Dispose 方法

Question

我正在使用MVC，但我有一个问题，正在调用处置方法。当我要登录时，所有验证和登录都正常工作，但是当我在成功登录后重定向时，在返回重定向到操作的情况下，正在调用 dispose 方法。我该怎么办？这是我的控制器：

 public UserManager<ApplicationUser> UserManager { get; private set; }
    public AdminController()
        : this(new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext())))
    {
    }
    public AdminController(UserManager<ApplicationUser> userManager)
    {
        UserManager = userManager;
    }
[HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public ActionResult Login(LoginViewModel model, string returnUrl)
    {
        if (Session["RoleID"] != null)
        {
            if (Convert.ToInt32(Session["RoleID"]) == Ansits2018.UTILITIES.Constants.Admin)
            {
                return RedirectToAction("Index", "Admin");
            }
        }
        if (ModelState.IsValid)
        {
            var accRepo = new AccountRepository();
            int UserID = 0;
            UserID = accRepo.IsUserValid(model.UserName, model.Password);
            if (UserID > 0)
            {
                var user = accRepo.GetUserByUsername(model.UserName);
                Session["CompanyID"] = 1;
                Session["UserID"] = UserID;
                Session["Username"] = model.UserName;
                Session["RoleID"] = user.RoleID;
                Session["Name"] = user.Name;
                FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
                                                   1,                                   // ticket version
                                                   user.Username,  // authenticated username
                                                   DateTime.Now,                        // issueDate
                                                   DateTime.Now.AddMinutes(60),        // expiryDate
                                                   true,                                // true to persist across browser sessions
                                                   user.RoleID.ToString(),       // can be used to store additional user data
                                                   FormsAuthentication.FormsCookiePath  // the path for the cookie
                                                   );
                // Encrypt the ticket using the machine key
                string encryptedTicket = FormsAuthentication.Encrypt(ticket);
                // Add the cookie to the request to save it
                HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
                cookie.HttpOnly = true;
                Response.Cookies.Add(cookie);
                if (!String.IsNullOrEmpty(returnUrl))
                {
                    return RedirectToLocal(returnUrl);
                }
                if (user.RoleID == Ansits2018.UTILITIES.Constants.Admin)
                {
                    return RedirectToAction("Index", "Admin");
                }
            }
            else
            {
                TempData["Message"] = "Invalid username or password.";
                return View(model);
            }
        }
        // If we got this far, something failed, redisplay form
        return View(model);
    }
  protected override void Dispose(bool disposing)
    {
        if (disposing && UserManager != null)
        {
            UserManager.Dispose();
            UserManager = null;
        }
        base.Dispose(disposing);
    }

Answer 1

RedirectToAction(至少你正在使用的表单(是这样构造的：

RedirectToAction(string actionName, string controllerName)

因此，return RedirectToAction("Index", "Home"); 会将您带到主控制器中的索引操作，return RedirectToAction("Index", "Admin");会将您带到管理控制器的索引操作。

因此，如果我正确阅读了您的问题，您需要将代码更改为return RedirectToAction("Index", "Home");

更新(根据评论(：

如果要RedirectToAction("Index", "Admin");，则需要调试代码以找出问题所在。可以为调试设置断点，或将这些调试行添加到代码中：

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public ActionResult Login(LoginViewModel model, string returnUrl)
{
    if (Session["RoleID"] != null)
    {
        if (Convert.ToInt32(Session["RoleID"]) == Ansits2018.UTILITIES.Constants.Admin)
        {
            return RedirectToAction("Index", "Admin");
        }
    }
    if (ModelState.IsValid)
    {
        var accRepo = new AccountRepository();
        int UserID = 0;
        UserID = accRepo.IsUserValid(model.UserName, model.Password);
        if (UserID > 0)
        {
            var user = accRepo.GetUserByUsername(model.UserName);
            Session["CompanyID"] = 1;
            Session["UserID"] = UserID;
            Session["Username"] = model.UserName;
            Session["RoleID"] = user.RoleID;
            Session["Name"] = user.Name;
            FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
                                                1,                                   // ticket version
                                                user.Username,  // authenticated username
                                                DateTime.Now,                        // issueDate
                                                DateTime.Now.AddMinutes(60),        // expiryDate
                                                true,                                // true to persist across browser sessions
                                                user.RoleID.ToString(),       // can be used to store additional user data
                                                FormsAuthentication.FormsCookiePath  // the path for the cookie
                                                );
            // Encrypt the ticket using the machine key
            string encryptedTicket = FormsAuthentication.Encrypt(ticket);
            // Add the cookie to the request to save it
            HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
            cookie.HttpOnly = true;
            Response.Cookies.Add(cookie);
            if (!String.IsNullOrEmpty(returnUrl))
            {
                System.Diagnostics.Debug.WriteLine("1 #####> RedirectToLocal (valid Login): " + returnUrl);
                return RedirectToLocal(returnUrl);
            }
            if (user.RoleID == Ansits2018.UTILITIES.Constants.Admin)
            {
                return RedirectToAction("Index", "Admin");
            }
        }
        else
        {
            System.Diagnostics.Debug.WriteLine("2 #####> Invalid Login Attempt - UserID > 0: " + model.UserName + " => " + model.Password));
            TempData["Message"] = "Invalid username or password.";
            return View(model);
        }
    }
    System.Diagnostics.Debug.WriteLine("3 #####> ModelState Invalid: " + model.UserName + " => " + model.Password);
    return View(model);
}

然后单击登录视图操作(不是[HttpPost](上的光标，点击菜单中的调试，然后点击开始调试。等待它全部稳定下来，然后登录并观看调试消息以查看出现哪一个。这应该可以很好地说明出了什么问题，以及你需要做什么。