public static byte[] StructToBytes(object structObj, int size = )

    {

        if (size == )

        {

            size = Marshal.SizeOf(structObj); //得到结构体大小

        }

        IntPtr buffer = Marshal.AllocHGlobal(size);  //开辟内存空间

        try

        {

            Marshal.StructureToPtr(structObj, buffer, false);   //填充内存空间

            byte[] bytes = new byte[size];

            Marshal.Copy(buffer, bytes, , size);   //填充数组

            return bytes;

        }

        catch (Exception ex)

        {

            Debug.LogError("struct to bytes error:" + ex);

            return null;

        }

        finally

        {

            Marshal.FreeHGlobal(buffer);   //释放内存

        }

    }

 public static object BytesToStruct(byte[] bytes, Type strcutType, int nSize)

    {

        if (bytes == null)

        {

            Debug.LogError("null bytes!!!!!!!!!!!!!");

        }

        int size = Marshal.SizeOf(strcutType);

        IntPtr buffer = Marshal.AllocHGlobal(nSize);

        //Debug.LogError("Type: " + strcutType.ToString() + "---TypeSize:" + size + "----packetSize:" + nSize);

        try

        {

            Marshal.Copy(bytes, , buffer, nSize);

            return Marshal.PtrToStructure(buffer, strcutType);

        }

        catch (Exception ex)

        {

            Debug.LogError("Type: " + strcutType.ToString() + "---TypeSize:" + size + "----packetSize:" + nSize);

            return null;

        }

        finally

        {

            Marshal.FreeHGlobal(buffer);

        }

    }