名称"DefaultAuthenticationTypes"在当前上下文中不存在 [英] The name 'DefaultAuthenticationTypes' does not exist in the current context

问题描述

我正在尝试在我的Web应用程序中实现基于角色的授权，如下所示:

I'm trying to implement role-based authorization in my web application like following:

[HttpPost]
[ActionName("Login")]
public ActionResult Login(LoginViewModel model)
{
    if (ModelState.IsValid)
    {
        string userName = model.Username;
        string[] userRoles = (string[])Session["UserRoles"];

        ClaimsIdentity identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);

        identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, userName));

        userRoles.ToList().ForEach((role) => identity.AddClaim(new Claim(ClaimTypes.Role, role)));

        identity.AddClaim(new Claim(ClaimTypes.Name, userName));

        AuthenticationManager.SignIn(identity);

        return RedirectToAction("Success");
    }
    else
    {
        return View("Login",model);
    }
}

两行出现错误:

1.ClaimsIdentity identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);

并且:

2.AuthenticationManager.SignIn(identity);

错误1:

the name 'DefaultAuthenticationTypes' does not exist in the current context

错误2是:

Authentication manager does not contains definition for SignIn

我试图找到一种解决方案，但我找不到与错误有关的任何东西.

I was trying to find a solution how to implement this but I couldn't find anything related to the errors.

推荐答案

DefaultAuthenticationTypes是Identity框架的一部分，位于Microsoft.AspNet.Identity命名空间中.

DefaultAuthenticationTypes is part of Identity framework and found in Microsoft.AspNet.Identity namespace.

要使用它，请在文件顶部添加using

To use it, add a using to the top of the file

using Microsoft.AspNet.Identity;
//...other code
identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);

或直接调用

identity = new ClaimsIdentity(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ApplicationCookie);

第二个问题已经在您的另一个问题中在这里

The second issue was already dealt with in another one of your questions here

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