Asp.net MVC 5无法获得用户角色 [英] Asp.net MVC 5 can't get user roles

问题描述

我正在尝试获取用户角色并对其进行修改. 我尝试了多种方法来获取用户角色，但没有任何效果. 有什么遗漏吗? 我可以找到正确的用户实体，但角色始终为空. 有什么办法可以正确地做到这一点吗? 谢谢

I'm trying to get user roles and modify it. I've tried many ways to get user roles but nothing works. Is there anything missing? I can get right User entity but Roles is always null. Is there any way to do it correctly? Thanks

var user = UserManager.Users.Single(u=>u.Id==id);
var roles = user.Roles;
roles.Add(....)


var user = UserManager.Users.Single(u=>u.Id==id);
user.IsinRole("rolename");

推荐答案

您可以通过声明获取它们:

You can get them via claims:

var roles = ((ClaimsIdentity)User.Identity).Claims
            .Where(c => c.Type == ClaimTypes.Role)
            .Select(c => c.Value);

要将用户添加到角色，可以执行以下操作(确保该角色存在于数据库中):

To add a user to a role, you can do (Make sure the role exists in the database though):

var roleresult = UserManager.AddToRole(currentUser.Id, "RoleName");

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