I am trying to read a value from COM1 using DataReceived Event. But with below sample I was able to ready only Single Byte ,  What I wanted to do is to read String . Say "On" "Off" I do I do it ?

public class Program
    {
        static SerialPort port;
    
        public static void Main()
        { 
            port = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One );
            port.Open();
            port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); 
            Thread.Sleep(Timeout.Infinite);

        }

        static void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte[] byte1 = new byte[1];
            port.Read(byte1, 0, byte1.Length);
char[] c = System.Text.Encoding.UTF8.GetChars(byte1);

            String a = new String(c);
            if (a == "n")
            {
              //on led
            }
            else if (a == "f")
            {
               //off led
            }
} }