//結構體轉位元組陣列
    public byte[] StructToBytes (object structObj)
    {
        
        int size = Marshal.SizeOf (structObj);//獲取結構體的大小
        IntPtr buffer = Marshal.AllocHGlobal (size);//分配記憶體
        try {
            Marshal.StructureToPtr (structObj, buffer, false);//將資料從託管物件封裝到非託管內容並不銷燬舊物體
            byte
 
[] bytes = new byte[size];
            Marshal.Copy (buffer, bytes, 0, size);//將資料從非託管記憶體複製到陣列內
            return   bytes;
        } finally {
            Marshal.FreeHGlobal (buffer);//釋放記憶體
        }
    }

//位元組轉結構體
    public object BytesToStruct (byte[] bytes, Type   strcutType)
    {
        
 
int size = Marshal.SizeOf (strcutType);
        IntPtr buffer = Marshal.AllocHGlobal (size);
        try {
            Marshal.Copy (bytes, 0, buffer, size);
            return  Marshal.PtrToStructure (buffer, strcutType);
        } finally {
            Marshal.FreeHGlobal (buffer);
        }   
        
    }