Init GDRIVE

gdrive_init.cs

  public void InitService()
        {
            UserCredential credential;

            using (var stream =
                new FileStream("client_id.json", FileMode.Open, FileAccess.Read))
            {
                string credPath = Environment.GetFolderPath(
                    Environment.SpecialFolder.Personal);
                credPath = Path.Combine(credPath, ".credentials/drive-dotnet-quickstart.json");

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

            // Create Drive API service.
            _service = new DriveService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = ApplicationName,
            });
        }