//Need to include this//

 

using Microsoft.PointOfService;

 

  private void button1_Click(object sender, EventArgs e)
{
 SerialPort sp= new SerialPort("COM4", 9600, Parity.None, 8, StopBits.One);

//in my case COM4  is the RJ11 connector port

//POS to Line display connector is RJ11 (Like modem connector)

sp.Open();

//Clear the Display
sp.Write(new byte[] { 0x0C }, 0, 1);
sp.Write("1st line="+textBox1.Text);

//Goto Bottem Line
sp.Write(new byte[] { 0x0A, 0x0D }, 0, 2);
sp.Write("2nd line=" + textBox2.Text);

Thread.Sleep(3000);
//Here it will sleep for 3 sec and then excecute again

 

//Clear the Display
sp.Write(new byte[] { 0x0C }, 0, 1);
sp.Write("3rd line=" + textBox3.Text);

//Goto Bottem Line
sp.Write(new byte[] { 0x0A, 0x0D }, 0, 2);
sp.Write("4th line=" + textBox4.Text);
sp.Close();

}

 

 

Hope this might help you :)

thank you for response Mr Sanwar Ranwa,

actually i want show only text message on pole/custom display.