How to pass an array through Pipe?

Question

C++ / C#

I am injecting a dll file into a process, I need to pass the DWORD array from the dll to another program.
Decided to use pipes.
How to pass DWORD[2048] array using pipe?
The code for writing and reading from the pipe:

void Write(LPCVOID Buffer)
{
  HANDLE hPipe;
  DWORD dwWritten;


  hPipe = CreateFile(TEXT("\\\\.\\pipe\\Pipe"), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
  if (hPipe != INVALID_HANDLE_VALUE)
  {
    WriteFile(hPipe, Buffer, 1024, &dwWritten, NULL);
    CloseHandle(hPipe);
  }
}
DWORD* Read()
{
  HANDLE hPipe;
  DWORD buffer[1024];
  DWORD dwRead;


  hPipe = CreateNamedPipe(TEXT("\\\\.\\pipe\\Pipe"),
    PIPE_ACCESS_DUPLEX,
    PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,   // FILE_FLAG_FIRST_PIPE_INSTANCE is not needed but forces CreateNamedPipe(..) to fail if the pipe already exists...
    1,
    1024 * 16,
    1024 * 16,
    NMPWAIT_USE_DEFAULT_WAIT,
    NULL);
  while (hPipe != INVALID_HANDLE_VALUE)
  {
    if (ConnectNamedPipe(hPipe, NULL) != FALSE)   // wait for someone to connect to the pipe
    {
      while (ReadFile(hPipe, buffer, sizeof(buffer) - 1, &dwRead, NULL) != FALSE)
      {
        /* add terminating zero */
        buffer[dwRead] = '\0';
        if (buffer != NULL) {
          WriteFile(hPipe, NULL, 1, NULL, NULL);
          return buffer;
        }
        break;
        /* do something with data in buffer */
      }
    }

    DisconnectNamedPipe(hPipe);
  }
}

This code is not working. What's wrong with him? In the case of char*, it passes perfectly.