static void Main(string[] args) { csjSerialPort.csjSerialPort mySerialPort = new csjSerialPort.csjSerialPort("com4"); mySerialPort.Open(); int cnt = 0; while (true) { byte[] b = new byte[10]; for (int i = 0; i < b.Length; i++) { b[i] = (byte)(cnt % 100); } mySerialPort.Send(b); Thread.Sleep(1); cnt++; } //mySerialPort.DataReceived += new csjSerialPortDataReceived(getBuffer); }