C#

Loop
   ForEach(Ball ball in Balls)
   {
      //calculate the new position given current position, velocity and elapsed time
   }

   DrawTheBackground();

   ForEach(Ball ball in Balls)
   {
      //Draw the ball at its current position
   }
End Loop

You don't send a stream of data to a USB port. You send it to the device attached. How you do that depends on the device.

All Time Programming wrote:

When i added break in Process_OutputDataReceived (before execution & while execution), the app doesn't print any Line on Console. I removed the break and tried again then it showed the LINE = on console.

        else if (isInValidLine(d))
        {
            //throw new Exception(d);
            connected = false;     // MADE THIS
            errorMsg = d;          // EXECUTED THIS ALSO BUT AGAIN VALUE = ""
            return;
        }


private bool isInValidLine(string line)
{
    if (line.IndexOf("Cannot load CA certificate file") > 0)
    {
        errorMsg = line;   // EXECUTED THIS, BUT VALUE REMAINED ""
        return true;
    }
    return false;
}

                    try
                    {
                        //conThread = new Thread(new ThreadStart(StartConnect));
                        //conThread.Start();
                        StartConnect();
                    }
                    catch (ThreadAbortException te)
                    {
                        Console.WriteLine("Abort Exception CAUGHT");
                    }
                    catch (Exception ex)
                    {
                        string msg = ex.Message;
                        if (msg.Equals("NotConnectedException"))
                            MessageBox.Show("Error connecting to the Server : Connection Time Out \n Unable to connect to the Server", "Time Out", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        else if (msg.IndexOf("Cannot load CA certificate file") > 0)
                            MessageBox.Show("Error connecting to the Server : Problem with Certificate File \n Unable to Load or Find required Certificate file.", "Failed to Connect", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        else if (msg.IndexOf("Error opening 'Auth' auth file:") > 0)
                            MessageBox.Show("Error connecting to the Server : Problem with Authentication File \n Unable to Load or Find required Authentication file.", "Failed to Connect", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        else if (msg.IndexOf("Error opening configuration file:") > 0)
                            MessageBox.Show("Error connecting to the Server : Problem with Configuration File \n Unable to find required Configuration file.", "Failed to Connect", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        else
                            MessageBox.Show("Error connecting to the Server : \n " + msg, "Failed to Connect", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                    }
                    finally
                    {
                        //conThread.Abort();                        
                        //Console.WriteLine("Thread ISAlive = " + conThread.IsAlive);
                    }                    
                      
                    Console.WriteLine("Execution Completed ");
//**************

        private void StartConnect()
        {
            DateTime start = DateTime.Now;

            int timeout = 100000, timepassed = 0;
            
            oc = new OpenConnect(cmd, timeout);
            int retVal = oc.ConnectToServer();
            while (!oc.Connected)
            {
                timepassed = (int)(DateTime.Now - start).TotalMilliseconds;
                if (timepassed > timeout)
                {
                    oc.DisconnectServer();
                    connectedToVpn = false;
                    throw new Exception("NotConnectedException");
                } else if (oc.ErrorMessage.Length > 0)
                {
                    Console.WriteLine("ERROR MESAGE = " + oc.ErrorMessage);  // THIS IS PRINTED
                    oc.DisconnectServer();
                    Console.WriteLine("DISCONNECTED");    // THIS IS PRINTED
                    connectedToVpn = false;
                    throw new Exception(oc.ErrorMessage);  // BUT THIS IS NEVER THROWN
                    Console.WriteLine("THROWN");
                }
                Thread.Sleep(100);
            }
            return;
        }