using System;

using System.IO.Ports;

​

using System.IO;

​

​

public class Program

{

    static SerialPort mySerialPort;

    public void Main(String[] args)

    {

        mySerialPort = new SerialPort("COM3",9600);

        // Add our Event Handler

        mySerialPort.DataReceived += new SerialDataReceivedEventHandler(mySerialPort_DataRecieved);

​

        try{

            mySerialPort.Open(); 

        }

    catch(IOException ex)

    {

        Console.WriteLine(ex);

    }

    // Any other Code here...   

}

​

public static void mySerialPort_DataRecieved(object sender,SerialDataReceivedEventArgs e)

{

  try

    {

    Console.Write(mySerialPort.ReadExisting());

    }

    catch (IOException ex)

    {

    Console.WriteLine(ex);

    }   

}

​

}