Managed C++/CLI

public static double[] duration_fltarray = new double[7];
    duration_fltarray[0] = 1;
    duration_fltarray[1] = 0.5;
    duration_fltarray[2] = 0.25;
    duration_fltarray[3] = 0.125;
    duration_fltarray[4] = 0.625;
    duration_fltarray[5] = 0.3125;
    duration_fltarray[6] = 0.15625;

public class CSharpClass
    {
        public static byte[] Hello(byte[] name)
        {
            string s = ", hello from .NET!";
            byte[] helloPart = Encoding.ASCII.GetBytes(s);
            byte[] whole =
               new byte[name.Length + helloPart.Length];
            int i = 0;
            foreach (byte b in name)
            {
                whole[i++] = b;
            }
            foreach (byte b in helloPart)
            {
                whole[i++] = b;
            }
            return whole;
        }
    }

using namespace CSharpAssembly;

__declspec(dllexport) char* __stdcall Hello(char* name)
{
	int i = 0;
	while (*name != '\0')
	{
		i++;
		name++;
	}
	array<unsigned char>^ nameManArr = gcnew array<unsigned char>(i);
	name -= i;
	i = 0;
	while (*name != '\0')
	{
		nameManArr[i] = *name;
		name++;
		i++;
	}
	array<unsigned char>^ char8ManArr = CSharpClass::Hello(nameManArr);
	char*  char8UnmanArr = new char[char8ManArr->Length + 1];
	for (int i = 0; i < char8ManArr->Length; i++)
	{
		char8UnmanArr[i] = char8ManArr[i];
	}
	char8UnmanArr[char8ManArr->Length] = '\0';
	return char8UnmanArr;
}

class DebugEntry
    {
        [DllImport("CppStdcallInerfaceWrapper2.dll",
              CharSet = CharSet.Ansi, CallingConvention =
                 CallingConvention.StdCall)]
        public static extern string Hello(string name);

        static void Main(string[] args)
        {
            string sd = Hello("MyName");
            System.Console.WriteLine();
            System.Console.ReadLine();
        }
    }

An unhandled exception of type 'System.AccessViolationException' occurred in mscorlib.dll

Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

public ref struct MyEventArgs : EventArgs {

  array<UInt16>^  imageData;
  ...
}