C# Auth0.Core login/register Samples

Auth0Sample.cs

using System;
using System.Threading.Tasks;
using Auth0.AuthenticationApi;
using Auth0.AuthenticationApi.Models;

namespace Cards.Documents.Authorization
{
    public class Auth0Example
    {
        string auth0domain;
        string auth0clientId;

        public async Task<Auth0.Core.User> LoginAuth0(string username, string password)
        {
            var domain = new Uri($"https://{auth0domain}/");
            var client = new AuthenticationApiClient(domain);
            var req = new AuthenticationRequest();
            req.Username = username;
            req.Password = password;
            req.ClientId = auth0clientId;
            req.Scope = "openid";
            req.Connection = "Username-Password-Authentication";


            var res = await client.AuthenticateAsync(req);



            var token = res.IdToken;
            if (!string.IsNullOrWhiteSpace(token))
            {
                var auser = await client.GetTokenInfoAsync(token);
                return auser;
            }
            return null;
        }

        public async Task RegisterAuth0(string email, string password)
        {
            var domain = new Uri($"https://{auth0domain}/");
            var client = new AuthenticationApiClient(domain);
            var req = new SignupUserRequest();
            req.Email = email;
            req.Password = password;
            req.ClientId = auth0clientId;
            req.Connection = "Username-Password-Authentication";

            var t = await client.SignupUserAsync(req);

        }

    }
}