Set up serial port and write string to it : COM Port SerialPort « Development « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Development
3. COM Port SerialPort

using System;
using System.IO.Ports;

static class MainClass
{
    static void Main(string[] args)
    {
        using (SerialPort port = new SerialPort("COM1"))
        {
            // Set the properties.
            port.BaudRate = 9600;
            port.Parity = Parity.None;
            port.ReadTimeout = 10;
            port.StopBits = StopBits.One;

            // Write a message into the port.
            port.Open();
            port.Write("Hello world!");

            Console.WriteLine("Wrote to the port.");
        }
    }
}