Sending hex data to serial port

The code is compiling but there is no data received.

 

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SerialPortHexCommunication
{
public class Program
{
static void Main(string[] args)
{

SerialPort port = new SerialPort();
port.PortName = "COM5";
port.Parity = Parity.None;
port.BaudRate = 9600;
port.DataBits = 8;
port.StopBits = StopBits.One;
// port.Handshake = Handshake.RequestToSend;
// port.ReceivedBytesThreshold = 8;
if (port.IsOpen)

{
port.Close();
port.Dispose();
}

byte[] bytesToSend = new byte[6] { 0xD0,0xF2,0xFF,0x00,0x06,0xC7 }; //$D0 $F2 $FF $00 $06 $C7
port.Open();
port.Write(bytesToSend,0,bytesToSend.Length);



port.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
port.Close();
port.Dispose();

}

private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
{
SerialPort port = (SerialPort)sender;

int bytes = port.BytesToRead;
byte[] buffer = new byte[bytes];

if (port.BytesToRead > 1)
{

port.Read(buffer, 0, bytes);
}

foreach (byte item in buffer)
{
Console.WriteLine(item);
Console.ReadKey();
}

//string indata = port.ReadExisting();
//Console.WriteLine("Data received");
//Console.WriteLine(indata);
//Console.ReadKey();
}
}
}