c#: google drive : google-apis.Dienstleistungen fehlt ein Montage-oder Referenz

ich versuche, mit google.Antrieb für .net mit den quickstart-Beispiel. ich habe installiert, die dlls über nuget, aber erhalte die folgende Fehlermeldung, dass ich eine Referenz fehlt oder Montage für google.apis.service. jede Hilfe würde geschätzt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DotNetOpenAuth.OAuth2;
using Google.Apis.Authentication.OAuth2;
using Google.Apis.Authentication.OAuth2.DotNetOpenAuth;
using Google.Apis.Drive.v2;
using Google.Apis.Drive.v2.Data;
using Google.Apis.Util;
using Google.Apis.Services;

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {

         String CLIENT_ID = "some_id";
            String CLIENT_SECRET = "some_secret";

            //Register the authenticator and create the service
            var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description, CLIENT_ID, CLIENT_SECRET);
            var auth = new OAuth2Authenticator<NativeApplicationClient>(provider, GetAuthorization);
            var service = new DriveService(new BaseClientService.Initializer()
            {
                Authenticator = auth
            });

            File body = new File();
            body.Title = "My document";
            body.Description = "A test document";
            body.MimeType = "text/plain";

            byte[] byteArray = System.IO.File.ReadAllBytes("document.txt");
            System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);

            FilesResource.InsertMediaUpload request = service.Files.Insert(body, stream, "text/plain");
            request.Upload();

            File file = request.ResponseBody;
            Console.WriteLine("File id: " + file.Id);
            Console.WriteLine("Press Enter to end this process.");
            Console.ReadLine();
        }

        private static IAuthorizationState GetAuthorization(NativeApplicationClient arg)
        {
            //Get the auth URL:
            IAuthorizationState state = new AuthorizationState(new[] { DriveService.Scopes.Drive.GetStringValue() });
            state.Callback = new Uri(NativeApplicationClient.OutOfBandCallbackUrl);
            Uri authUri = arg.RequestUserAuthorization(state);

            //Request authorization from the user (by opening a browser window):
            Process.Start(authUri.ToString());
            Console.Write("  Authorization Code: ");
            string authCode = Console.ReadLine();
            Console.WriteLine();

            //Retrieve the access token by using the authorization code:
            return arg.ProcessUserAuthorization(authCode, state);
        }
    }