ASP.Net MVC List of User and their Roles

There are no built in methods for retrieving the list of users with their roles so you can try to get the user and their role like below (using EF):

var list = context.Users        
    .Where(x => x.Roles.Select(a => a.Id))
    .ToList();

Using this you get every users and assigned roles.

Update Create a Model like below first:

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

Then Your Query would be like (Query Syntax):

var listOfUsers = (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 UserRoleInfo() {User = u, Roles = query.ToList<string>()})
                         .ToList();

Query above will return Every User With their Roles no matter how many.

UPDATE

Your view would be like:

@model UserRoleInfo
    <table>
        <tbody>
@foreach (var user in Model)
{
    var appUser = user.ApplicationUser;
    var roles = user.Roles;

            <tr>
                <td>
                    @appUser.Email
                </td>
                <td>
                    @string.Join(",", roles)
                </td>
            </tr>

}
        </tbody>
    </table>