share a structure array containing multidimensional char array C#/

I want to share a structure array containing multi dimensional char array
between C# and C++, by using memory mapped file.

I already have C++ code for handling memory mapped file.
I am passing pointer to the structure array as shown below for C++;
I am able to work with pointer ( for C++ ).
C++ code works fine.

I am working on converting code for memory mapped file in C#.
My problems:
1. How should I define structure array in C# ( for the below structure array
).
2. How should I define pointer to structure array in C# ( for the below
structure array ).

Any help related to this would be highly appreciated.

C++ implementation:

struct msg_file_s
{
unsigned char mb_buffer[1000][1000];
.....
.....
};

struct msg_file_s msg_file[16];
struct msg_file_s *msg_file_ptr;


HANDLE api_map_memory(struct msg_file_s **msg_file_ptr)
{
HANDLE hKernel = CreateFileMapping ( (HANDLE) 0xFFFFFFFF,
NULL,

PAGE_READWRITE,
0,

sizeof( struct msg_file_s ),

_T("TEST"));

*msg_file_ptr = (struct msg_file_s *) MapViewOfFile( hKernel,

FILE_MAP_READ | FILE_MAP_WRITE,
0,
0,
0 );
return(hKernel);
}


map_memory_file(int index)
{
msg_file_ptr = &msg_file[index];
hKernel = api_map_memory(&msg_file_ptr);
}

/****************************************************************************/

C# implementation:

[StructLayout(LayoutKind.Sequential)]
unsafe struct msg_file_s
{
[MarshalAs(UnmanagedType.LPArray, ArraySubType= UnmanagedType.U1,
SizeConst = 100, SizeParamIndex=2)]
byte[,] mb_buffer;
}


--
Aykut ERGİN
Nortel Netaş
Software Design Engineer

.

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