VDF display c# CODE
private void button1_Click(object sender, EventArgs e)
{
SerialPort sp = new SerialPort();
sp.PortName = "COM1";
sp.BaudRate = 9600;
sp.Parity = Parity.None;
sp.DataBits = 8;
sp.StopBits = StopBits.One;
sp.Open();
sp.WriteLine (" ");
sp.WriteLine("Hi welocme here");
sp.Close();
sp.Dispose();
sp = null;
}