using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Runtime.InteropServices;

namespace 配列の型変換__
{
    class Program
    {
        static void Main(string[] args)
        {
            UnionReference UR = new UnionReference();//下の方に定義あり。

            UR.ByteArray = new byte[128];
            UR.ShortArray[0] = 511;

            Console.WriteLine("ByteArray:{0},ShortArray:{1}", UR.ByteArray.Count(), UR.ShortArray.Count());
            UR.ByteArray = null;

            UR.ShortArray = new short[128];
            UR.ByteArray[4] =128 ;

            Console.WriteLine("ByteArray:{0},ShortArray:{1}", UR.ByteArray.Count(), UR.ShortArray.Count());
            return;
          
        }
        
        //static void Main(string[] args)
        //{
        //    short[] Ary = new short[] { 1, 2, 3, 4, 5, 6, 7, 8 };
        //    byte[] Ary2 = Ary;//不可
        //}
    }

    [System.Runtime.InteropServices.StructLayout(LayoutKind.Explicit)]
    struct UnionReference
    {
        [System.Runtime.InteropServices.FieldOffset(0)]
        public byte[] ByteArray;
        [System.Runtime.InteropServices.FieldOffset(0)]
        public short[] ShortArray;
    }
}