C语言的这个操作用C#该如何操作

C语言的这个操作用C#该怎么操作？

C/C++ code

typedef struct{    unsigned char ucOp;    unsigned char ucHType;    unsigned char ucHLen;    unsigned char ucHops;    unsigned long ulXID;    unsigned short usSecs;    unsigned short usFlags;    unsigned long ulCIAddr;    unsigned long ulYIAddr;    unsigned long ulSIAddr;    unsigned long ulGIAddr;    unsigned char pucCHAddr[16];    char pcSName[64];    char pcFile[128];    unsigned char pucVend[64];}tBOOTPPacket;tBOOTPPacket *pPacket;unsigned char pcPacketData[700];pPacket = (tBOOTPPacket *)pcPacketData;

C# code

[StructLayoutAttribute(LayoutKind.Sequential)]public struct tBOOTPPacket{    byte ucOp;    byte ucHType;    byte ucHLen;    byte ucHops;    uint ulXID;    ushort usSecs;    ushort usFlags;    uint ulCIAddr;    uint ulYIAddr;    uint ulSIAddr;    uint ulGIAddr;    [MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 16)]    byte[] pucCHAdd;    [MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 64)]    byte[] pcSName;    [MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 128)]    byte[] pcFile;    [MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 64)]    byte[] pucVend;}//字节数组转结构byte[] bytes = new byte[300];Type type = typeof(tBOOTPPacket);int size = Marshal.SizeOf(type);IntPtr p = Marshal.AllocHGlobal(size);Marshal.Copy(bytes, 0, p, size);tBOOTPPacket obj = (tBOOTPPacket)Marshal.PtrToStructure(p, type);Marshal.FreeHGlobal(p);