'CreateClientFromConnectionString' Functionality Using "enableTestSend" about azure-notificationhubs-dotnet HOT 7 CLOSED

:"System.ArgumentNullException","message":"Value cannot be null.\r\nParameter name: notificationId"

class AsynchNotification
{
    protected int deviceType;
    protected string ownerUri;
    protected WindowsNotification winMessage;
    protected string notice;
    protected bool receivedResponse;
    public string finalSessionStatus;
    protected bool responseReceived;
    protected bool notificationAborted;
    protected DateTime startTime;
    protected int responseTimeSpan = 3;

    protected NotificationRequestHandler handler;

    public AsynchNotification(NotificationRequestHandler callHandler)
    {
        handler = callHandler;
    }

    public void StartNotificationWork(int type, string uri, WindowsNotification notificationToSend, string noticeToSend)
    {
        deviceType = type;
        ownerUri = uri;
        winMessage = notificationToSend;
        notice = noticeToSend;

        ThreadPool.QueueUserWorkItem(new WaitCallback(StartNotificationTask), null);
    }

    private async void StartNotificationTask(Object workItemState)
    {
        bool debug = false;
        bool enableTestSend = false;
        NotificationOutcome outcome;
        NotificationDetails details;

        // Set the Notification Hubs credentials for the Mobile App
        try
        {
            // Remark if not debugging
            debug = true;
            enableTestSend = true;

            // Create hub instance
            string notificationHubConnection = "Endpoint=sb://identitycheckpointnotifications.servicebus.windows.net/;SharedAccessKeyName=DefaultFullSharedAccessSignature;SharedAccessKey=53Be0m1oGSuDnbyr3aGSO+nraHGPy/id/khhvnHzdWc=";
            string notificationHubName = "IdentityCheckpointNotificationsHub";

            NotificationHubClient hub = NotificationHubClient.CreateClientFromConnectionString(notificationHubConnection, notificationHubName, enableTestSend);

            // Send the push notification.
            try
            {
                outcome = await hub.SendDirectNotificationAsync(winMessage, ownerUri);
                if (outcome.NotificationId != "")
                {
                    details = await hub.GetNotificationOutcomeDetailsAsync(outcome.NotificationId);

                    while (details.State.Equals(2))
                    {
                        details = await hub.GetNotificationOutcomeDetailsAsync(outcome.NotificationId);
                        await Task.Delay(1000);
                    }

                    if (details.State.Equals(0) || details.State.Equals(3))
                    {
                        handler.notificationSent = true;

                        if (details.State.Equals(0))
                        {
                            handler.notificationEnqueued = true;
                        }
                    }
                    else
                    {
                        handler.notificationSent = false;

                        if (debug)
                        {
                            string uri = details.PnsErrorDetailsUri;
                        }
                    }

                    handler.notificationProcessed = true;
                }
                else
                {
                    if (outcome.State.Equals(0) || outcome.State.Equals(3))
                    {
                        handler.notificationSent = true;

                        if (outcome.State.Equals(0))
                        {
                            handler.notificationEnqueued = true;
                        }
                    }
                    else
                    {
                        handler.notificationSent = false;

                        if (debug)
                        {
                            List <Microsoft.Azure.NotificationHubs.RegistrationResult> results = outcome.Results;
                        }
                    }

                    handler.notificationProcessed = true;
                }
            }
            catch (System.Exception ex)
            {
                finalSessionStatus = "An error occurred during query execution: " + ex;
                responseReceived = false;
                notificationAborted = true;

                throw new ApplicationException("An error occurred during query execution: ", ex);
            }

            startTime = DateTime.Now;
        }
        catch (WebException ex)
        {
            if (ex.Status == WebExceptionStatus.Timeout)
            {
                receivedResponse = false;
                finalSessionStatus = "No request was able to be sent within the allocated time period.";
                responseReceived = false;
            }
            else
            {
                finalSessionStatus = "An error occurred during query execution: " + ex;
                responseReceived = false;
                notificationAborted = true;

                throw new ApplicationException("An error occurred during query execution: ", ex);
            }
        }
    }
}