Kann keine Liste der Benutzer mit Google Verzeichnis-API Admin-SDK

Dieser code funktioniert für mich

static void GettingUsers()
{ 
  String serviceAccountEmail = "[email protected]";
  var certificate = new X509Certificate2(@"xxxxx.p12", "notasecret", X509KeyStorageFlags.Exportable);
  ServiceAccountCredential credential = new ServiceAccountCredential(
  new ServiceAccountCredential.Initializer(serviceAccountEmail)
  {
  Scopes = new[] { DirectoryService.Scope.AdminDirectoryUser},
  User = "your USER",  
  }.FromCertificate(certificate));
  var service = new DirectoryService(new BaseClientService.Initializer()
  {
  HttpClientInitializer = credential,
  ApplicationName = "name of your app",
  });

  var listReq = service.Users.List();
  listReq.Domain = "your domain";
  Users allUsers = listReq.Execute();
  int counter = 0;
  foreach(User myUser in allUsers.UsersValue){
    Console.WriteLine("*" + myUser.PrimaryEmail);
     counter++;
}

Console.WriteLine(counter);
Console.ReadKey();

Weitere Informationen, werfen Sie Bitte einen Blick in Directory API: Users-Liste.
Es gibt Grenzen und Quoten.

Arbeit für mich.

using Google.Apis.Auth.OAuth2;
using Google.Apis.Admin.Directory.directory_v1;
using Google.Apis.Admin.Directory.directory_v1.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;


namespace ConsoleApplication1
{



    class Program
    {
        static string[] Scopes = { DirectoryService.Scope.AdminDirectoryUserReadonly};
        static string ApplicationName = "API G Suite implementation guid by amit";

        static void Main(string[] args)
        {
            UserCredential credential;

            using (var stream =
                new FileStream("client_secret.json", FileMode.Open, FileAccess.Read))
            {
                string credPath = System.Environment.GetFolderPath(
                    System.Environment.SpecialFolder.Personal);
                credPath = Path.Combine(credPath, ".credentials1/admin-directory_v1-dotnet-quickstart.json");

                credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    Scopes,
                    "user",
                    CancellationToken.None,
                    new FileDataStore(credPath, true)).Result;
                Console.WriteLine("Credential file saved to: " + credPath);
            }

            //Create Directory API service.
            var service = new DirectoryService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = ApplicationName,
            });

            //////Define parameters of request.
            UsersResource.ListRequest request = service.Users.List();
            request.Customer = "my_customer";
            request.MaxResults = 10;
            request.OrderBy = UsersResource.ListRequest.OrderByEnum.Email;

            //////List users.
            IList<User> users = request.Execute().UsersValue;
            Console.WriteLine("Users:");
            if (users != null && users.Count > 0)
            {
               foreach (var userItem in users)
              {
                   Console.WriteLine("{0} ({1})", userItem.PrimaryEmail,
                       userItem.Name.FullName);
               }
            }
            else
            {
               Console.WriteLine("No users found.");
            }
            Console.Read();


        }
    }
}