Asp.net MVC ReturnUrl 值始终为空

Asp.net MVC ReturnUrl value always null

好的,在发布之前我已经研究并尝试了每一个建议(当然是单独的),但我每次都碰壁

这是我的登录视图 我使用 ViewBag 来传递 ReturnUrl 值,正如我在该问题的许多答案中看到的那样

   <h2>Login</h2>
@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { role = "form" }))
{
    @Html.AntiForgeryToken()


  ...............

这是登录操作的结果

   [HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public ActionResult Login(UserLogin login, string returnUrl="")
{
    string message = "";
    using (NerdsContext nc = new NerdsContext())
    {
        var v = nc.User.Where(a => a.email == login.email).FirstOrDefault();
        if (v != null)
        {
            if (!v.IsEmailVerified)
            {
                ViewBag.Message = "Please verify your email first";
                return View();
            }
            if (string.Compare(Crypto.Hash(login.password), v.password) == 0)
            {
                int timeout = login.rememberMe ? 525600 : 20; // 525600 min = 1 year
                var ticket = new FormsAuthenticationTicket(login.email, login.rememberMe, timeout);
                string encrypted = FormsAuthentication.Encrypt(ticket);
                var cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encrypted);
                cookie.Expires = DateTime.Now.AddMinutes(timeout);
                cookie.HttpOnly = true;
                Response.Cookies.Add(cookie);

                //Redirect the user to new url
                if (Url.IsLocalUrl(returnUrl))
                {
                    ViewBag.ReturnUrl = returnUrl;
                    return Redirect(returnUrl);

                }
                else
                {
                    return RedirectToAction("Nerd", "Home");
                }
            }
            else
            {
                message = "Invalid credential provided";
            }
        }
        else
        {
            message = "Invalid credential provided";
        }
    }
    ViewBag.Message = message;
    return View();
}

最后这是我在 web.config 文件

中添加的行
 <authentication mode="Forms">
      <forms cookieless="UseCookies"  loginUrl="/Account/Login"  timeout="30" slidingExpiration="true" protection="All"></forms>
    </authentication>

当我 运行 我从来没有真正登录它总是让我回到登录页面并且 returnUrl 的值总是空的 那么这是怎么回事????

好的,经过大量搜索,我在这里找到了答案 [Request.IsAuthenticated is always false ]

我不得不在 web.config 的模块中添加这些行 system.WebServer

<remove name="FormsAuthentication" />
      <add name="FormsAuthentication" type="System.Web.Security.FormsAuthenticationModule" />