using System;

using System.Threading;

using System.Runtime.InteropServices;

​

namespace Program

{

    public class Program

    {

        public static void Main(string[] args)

        {

            var array = new ByteArray();

            array.Int = 0xBADF00D;

            Console.WriteLine(array.Int);

            Console.WriteLine(array.Byte1.ToString("X"));

            Console.WriteLine(array.Byte2.ToString("X"));

            Console.WriteLine(array.Byte3.ToString("X"));

            Console.WriteLine(array.Byte4.ToString("X"));

        }

    }

}

​

[StructLayout(LayoutKind.Explicit)]

struct ByteArray

{

    [FieldOffset(0)]

    public byte Byte1;

    [FieldOffset(1)]

    public byte Byte2;

    [FieldOffset(2)]

    public byte Byte3;

    [FieldOffset(3)]

    public byte Byte4;

    [FieldOffset(0)]

    public int Int;

}