Viewing user roles show the role id instead of the role name

Question

I\'m trying to configure role-based authorization in ASP.NET Identity. I want to make it so that Admin users can see a list of users and their roles (on the Index page) and

Answer 1

using System.Linq;
using System.Data;
using System.Data.Entity;

        var db = new ApplicationDbContext();
        var Users = db.Users.Include(u => u.Roles);

        foreach (var item in Users)
        {
            string UserName = item.UserName;
            string Roles = string.Join(",", item.Roles.Select(r=>r.RoleId).ToList());
        }

Answer 2

IdentityUserRole class have no navigation properties for IdentityUser and IdentityRole, just UserId and RoleId, its not that easy to get the roles of a user. So we need to use 2 db calls

var users = db.Users.Include(u => u.Roles);
var roles = db.Roles.Include(r => r.Users);

A ViewModel like this

public class UsersRolesViewModel 
{
     public List<ApplicationUser> Users { set; get; }
     public List<IdentityRole> Roles { set; get; }
}

and the in View

@foreach (var user in Model.Users)
{
    <tr class="index-item" data-href="@Url.Action("Details", "Users", new { id= user.Id })">
        <td>
            @user.Email
        </td>
        <td>
            @string.Join(",", roles.Where(r => r.Users.Any(u => u.UserId == user.Id)).Select(r => r.Name))
        </td>
        <td class="index-links">
                //stuff
        </td>
    </tr>
}

Edit

You can get all the data you want you with one query

var users = (from u in db.Users
             let query = (from ur in db.Set<IdentityUserRole>()
                          where ur.UserId.Equals(u.Id)
                          join r in db.Roles on ur.RoleId equals r.Id select r.Name)
                          select new UserDto() {User = u, Roles = query.ToList<string>()})
                         .ToList();

Using this simple model

public class UserDto
{
    public ApplicationUser User { set; get; }
    public List<string> Roles { set; get; } 
}

and the in View

  @foreach (var user in Model.Users)
  {
        var appUser = user.ApplicationUser;
        var roles = user.Roles;

        <tr class="index-item" data-href="@Url.Action("Details", "Users", new { id= appUser.Id })">
            <td>
                @appUser.Email
            </td>
            <td>
                @string.Join(",", roles)
            </td>
            <td class="index-links">
                    //stuff
            </td>
        </tr>
    }