Qt Socketprogramming, deliver data repetitively to server

Hi
I'd like to deliver the updated datastring every 20ms to the server on click. at the moment only one datastring is delivered on click.
I tried to set a loop in void MainWindow::ConnectToServer(), but it does not seem to work.
below is the affected part of the code

I would appreciate your help
thanks in advance

Code:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    // Initialize
    p_MainThread      = NULL;
    p_SensorThreadArr = NULL;
    p_TcpSocket = NULL;
 
    // set GUI
    SetGUIDialogBox();
 
    ///p_MainThread = new MainThread();
 
    // ********************
    // Connect to Server
    // ********************
    p_TcpSocket = &tcpSocket;
    //connect(p_TcpSocket, SIGNAL(connected()), this, SLOT(SendRequest()));
    connect(p_TcpSocket,  SIGNAL(connected()), this, SLOT(StartTransfer()));
    // Two Buttons
   [B] connect(searchButton, SIGNAL(clicked()),   this, SLOT(ConnectToServer()));[/B]
    connect(stopButton,   SIGNAL(clicked()),   this, SLOT(StopSearch()));
 
    // **********************
    // Connect GUI Dialog Box
    // **********************
    connect(p_TcpSocket, SIGNAL(disconnected()), this, SLOT(ConnectionClosedByServer()));
    connect(p_TcpSocket, SIGNAL(readyRead()),    this, SLOT(UpdateTableWidget()));
    connect(p_TcpSocket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(Error()));
}
 
 
void MainWindow::ConnectToServer()
{
    p_MainThread->start();
 
   bool isRuning = true;
   while (isRuning == true)
   for (int Ind=0; Ind<5; Ind++)
    {
        qDebug( " connectToServer! "  );
 
        ////p_ClientDataSocket->ConnectToServer(address, port);
        quint16 port = 8888;
        QString address = "127.0.0.1";
        QHostAddress addr(address);
        p_TcpSocket->connectToHost(addr, port);
 
        UpdateConnectionGUI();
        //sleep( 1 ); // Sleep xx ms
    }
 
}
 
 
void MainWindow::StartTransfer()
{
    // *********************************
    // read sensor data from all sensors
    // *********************************
    for (int Ind=0; Ind<m_SensorSum; Ind++)
    {
        QByteArray qBetyArray = p_SensorThreadArr[Ind]->GetSensorData();
 
        // *****************************************
        // build client socket message as QByreArray
        // *****************************************
        // int sensorDataStatus = p_SensorThread->GetSensorDataStatus();
        // no updated sensor data
        // if (sensorDataStatus != 1)
        //    return;
 
        // *******************************************
        // send client socket message to server socket
        // *******************************************
        int len = qBetyArray.length();
        tcpSocket.write(qBetyArray, len);
    }
 
    return;
}