CLR (c++ .net) as Addin to Dynamic NAV - c++

Question

I think this might be more generic, but in this case I try to create a c++ CLR to Microsoft Dynamic NAV.
If I do this in C# it works fine. C# code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace VisualCSharp
{
public class MyTest
{
public MyTest()
{
}
public int AddTest(int a, int b)
{
return a + b;
}
}
}
When I try to add that to Dynamic NAV, I find it:
Select and press OK:
So far so good.
Then I like to do the same in C++ with a CLR class.
I start with creating a C++ CLR Class library and add the code for the test: (I did it inline here, just to keep code simple, but it does not matter if I separate it.)
#pragma once
using namespace System;
namespace VisualCPP
{
public ref class MyTest
{
public:
MyTest()
{
};
int AddTest(int a, int b)
{
return a + b;
};
};
}
Do the same with this. In Assembly list it come up identical to the VisualCSharp addin, but it shows up as Processor "x86", but thats ok. I have C# that also do that (COM wrappers) and they also work fine.
However, when I press "OK" i do get an error telling me that it can not load the type "VisualCPP".
So, question is: What am I missing? I know that the CLR code is different as it is not pure managed (even using the depricated /pure compile option does not work), but is there some kind of setting or declaration that had to be done to make my class visible?

Answer 1

As far is I know you cannot use unmanaged code in NAV.
You assembly also need to be signed - in you example the Public Key Token is null therefore it's not gonna work.
Situations like that I always recommend to create a wrapper dll to handle the unmanaged code though it (for example this is what Microsoft was done with the Office SDK)
I hope it helps.
Cheers!