Passing an array of bytes from C++ to C#

Question

Hi All, I am trying to write a C# program to call a routine in managed C++. In the routine, the C# program passes a delegate to the managed C++. The delegate looks like this in c++: public __delegate void FoundPidDelegate ( unsigned char pData __gc[], ); My C# routine looks like this: static private void MyFoundPidFunction (byte []pData) The C++ program should call the delegate and pass it an array of bytes (or at least the address of an array of bytes). In C++ I am allocating the memory like this: unsigned char arrManaged __gc [] = new unsigned char __gc[iDataLen]; Then I call the C# delegate routine like this: m_pFoundFunc(arrManaged); When I arrive back in my C# program, the pData array only has ONE element (a correct one) and if I try to look at pData[1], I get an error. What am I doing wrong? Thanks! Josh