Multiple Identities in ASP.NET Core 2.0

Question

I am migrating an ASP.NET Core 1.0 application to ASP.NET Core 2.0.

In my startup I am configuring two identities:

services.AddIdentity

        

Answer 1

After looking through the ASP.NET Core source code on github, a second identity could be added using this extension method:

using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using System;
using System.Collections.Generic;
using System.Text;

namespace Whatever
{
    public static class IdentityExtensions
    {
        public static IdentityBuilder AddSecondIdentity(
            this IServiceCollection services)
            where TUser : class
            where TRole : class
        {
            services.TryAddScoped, UserValidator>();
            services.TryAddScoped, PasswordValidator>();
            services.TryAddScoped, PasswordHasher>();
            services.TryAddScoped, RoleValidator>();
            services.TryAddScoped>();
            services.TryAddScoped, UserClaimsPrincipalFactory>();
            services.TryAddScoped, AspNetUserManager>();
            services.TryAddScoped, SignInManager>();
            services.TryAddScoped, AspNetRoleManager>();

            return new IdentityBuilder(typeof(TUser), typeof(TRole), services);
        }
    }
}