(转)C# 结构体和字节数组相互转换 (2011-10-31 00:00:00)

 /// <summary>
        /// 将结构转换为字节数组
        /// </summary>
        /// <param name="obj">结构对象</param>
        /// <returns>字节数组</returns>
        public static byte[] StructToBytes(object obj)
        {
            //得到结构体的大小
            int size = Marshal.SizeOf(obj);
            //创建byte数组
            byte[] bytes = new byte[size];
            //分配结构体大小的内存空间
            IntPtr structPtr = Marshal.AllocHGlobal(size);
            //将结构体拷到分配好的内存空间
            Marshal.StructureToPtr(obj, structPtr, false);
            //从内存空间拷到byte数组
            Marshal.Copy(structPtr, bytes, 0, size);
            //释放内存空间
            Marshal.FreeHGlobal(structPtr);
            //返回byte数组
            return bytes;

        }
        /// <summary>
        /// byte数组转结构
        /// </summary>
        /// <param name="bytes">byte数组</param>
        /// <param name="type">结构类型</param>
        /// <returns>转换后的结构</returns>
        public static object BytesToStruct(byte[] bytes, Type type)
        {
            //得到结构的大小
            int size = Marshal.SizeOf(type);
           // Log(size.ToString(), 1);
            //byte数组长度小于结构的大小 不能转换则返回 null
            if (size > bytes.Length)
            {
                //返回空
                return null;
            }
            //分配结构大小的内存空间
            IntPtr structPtr = Marshal.AllocHGlobal(size);
            //将byte数组拷到分配好的内存空间
            Marshal.Copy(bytes, 0, structPtr, size);
            //将内存空间转换为目标结构
            object obj = Marshal.PtrToStructure(structPtr, type);
            //释放内存空间
            Marshal.FreeHGlobal(structPtr);
            //返回结构
            return obj;
        }