using System;

public class Program

{

    public static void Main()

    {

        byte[] byteArray = { 0, 1, 2, 3, 4, 5, 10, 20, 254, 255 };

        string hexString = BitConverter.ToString(byteArray);

        Console.WriteLine("Data readed 0x: {0}",hexString.Replace('-', ' '));

        string extractedHexString = BitConverter.ToString(byteArray,0,5);

        Console.WriteLine("Extracted data readed 0x: {0}",extractedHexString.Replace('-', ' '));

    }

}