如何获得ASP.NET身份用户的列表？ [英] How to obtain a list of Users from ASP.NET Identity?

问题描述

编辑：这个问题是过时

身份框架是在那一刻，我问这是一个移动的目标。笔者改变了不少的几件事情，他们已经脱钩几件事情，使事情变得更容易。

The Identity Framework was a moving target at the moment I asked this. The authors changed quite a few things and they have decoupled several things, making things easier.

有一个在GitHub上中的 Asp.NET身份示例项目。

Have a look at the Asp.NET Identity Sample project on github.

我创建一个小的应用程序需要用户管理。注册是不允许的，而不是存在将创建和修改登录信息的超级用户。

I'm creating a small application that requires user management. Registration is not allowed, instead there is a super user that will create and modify login information.

我使用的是新的<一个href=\"http://blogs.msdn.com/b/webdev/archive/2013/06/27/introducing-asp-net-identity-membership-system-for-asp-net-applications.aspx\">ASP.NET身份会员制，果然，创建用户和添加角色非常简单，直观。

I'm using the new ASP.NET Identity membership system, and sure enough, creating users and adding roles is easy and intuitive.

现在，我的问题：如何获取使用用于由生成AccountController类的AuthenticationIdentityManager类用户的列表？我无法找到一种方法来访问从我的控制器的用户列表。

Now, my question: How to obtain a list of users using the AuthenticationIdentityManager class that is used by the generated AccountController class? I couldn't find a way to access the user list from my controller.

（顺便说一句，新的名称身份可能听起来真棒到一些人，但它是寻找一种痛苦。）

(By the way, the new name "Identity" may sound awesome to some people but it is a pain to search for.)

修改：如果我试图做到这一点。

Edit: If I try to do this

ApplicationDbContext UsersContext = new ApplicationDbContext();
UsersContext.Users.ToList(); // Exception

我得到一个异常无效的列名'鉴'。由新的应用程序向导自动生成ApplicationDbContext的定义：

I get an exception Invalid column name 'Discriminator'. The definition of ApplicationDbContext is generated automatically by the new application wizard:

using Microsoft.AspNet.Identity.EntityFramework;

namespace Cobranzas.Models
{
    public class ApplicationUser : User
    {

    }
    public class ApplicationDbContext : IdentityDbContextWithCustomUser<ApplicationUser>
    {

    }
}

所以我的猜测是，鉴列告诉分开 ApplicationUser 从用户。然而，它并不在我的数据库中存在（这是由应用程序自动创建的。）

So my guess is that Discriminator column is for telling apart ApplicationUser from User. However, it does not exists in my database (which was created automatically by the application.)

推荐答案

我发现我没有使用任何东西派生 ApplicationUser 对象，所以我只是去进取，改变了这一切用途普通的旧式用户。然后，我只是改变了 ApplicationDbContext 定义如下：

I found out that I wasn't using the derived ApplicationUser object for anything, so I just went ahead and changed all uses of it for plain old User. Then I just changed ApplicationDbContext definition for the following:

public class ApplicationDbContext : IdentityDbContext<
    User, UserClaim, UserSecret, UserLogin,
    Role, UserRole, Token, UserManagement>
{
}

现在我可以访问用户列表：

And now I can access the user list:

UsersContext = new ApplicationDbContext();
...
UsersContext.Users.ToList();

不过，我认为这会回来困扰着我的未来（我可能会需要更多的字段添加到用户），所以可能我得使用同样的方法在这个问题：

However, I think this will come back and haunt me in the future (I'll probably need to add more fields to User) so probably I'll have to use the same approach as in this question:

获得ASP.NET MVC5识别系统中所有的角色名

修改：因为我需要添加一个新的属性，我必须恢复我的变化。于是我继续做与ASP.NET的身份示例项目行比较的线，并且发现了生成的项目有以下行：

Edit: Since I got the need to add a new property, I had to revert my changes. So I went ahead and did a line by line comparison with the ASP.NET Identity Sample Project, and found out that the generated project had the following line:

IdentityManager = new AuthenticationIdentityManager(new IdentityStore());

而示例应用程序已经包含在构造函数中的数据库环境。所以我说在我的构造，重新创建数据库和问题走了。

while the Sample application had included the database context in the constructor. So I added it in my constructor, recreated the database and the problem went away.

IdentityManager = new AuthenticationIdentityManager(new IdentityStore(new ApplicationDbContext()));

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