SerialPort Issue

[firoz.raj]

Hi Friends, the following code showing the Message at Customer Display System Which is on COM1 Port with Pc.
the problem is that each time i am running the following code . it overwrites in the same line .is there any
way to clear the Screen the again Display the Message at Customer Display Lcd ? .and Formating the size at Customer Display System. let me know please .any help would be highly appreciated .

 private void SerialPortTest_Load(object sender, EventArgs e){
            SerialPort port = new SerialPort();
            port.PortName = "COM1";
            port.Parity = Parity.None;
            port.DataBits = 8;
            port.StopBits = StopBits.One;
            if (port.IsOpen ){
                port.Close();                
          } 
           
            port.Open();
            port.ReadExisting();
            port.WriteLine("WELCOME TO ALHOKAIR IT ");
            port.Close();
            port.Dispose();
        }
    }