.NET plugin - bug?

[Christian Kaiser]

I wanted to test my plugin manager and wrote two codes, one for a C# plugin,
one for a C++ plugin.

The codes are appended at the end.

My problem: The C++ class is only inherited from the interface if at least
one function is implemeted in the C file. When I implement the class only in
the header file (like in the code below), ILDASM shows that the class is NOT
inheriting the interface.

Is this a bug, or a feature, of the C++ compiler? I'm new to .NET (not
Win32, which I'm pretty much used to).

Microsoft Visual Studio 2005
Version 8.0.50727.42 (RTM.050727-4200)
Microsoft .NET Framework
Version 2.0.50727

Christian
-----

C#:
using System;

using System.Text;

using logsolarmgr.PluginAPI;

public class test_csharp

: ILSDataSource

{

public String GetName()

{

return ("test csharp: (" + AppDomain.CurrentDomain.BaseDirectory +
")");

}

}

-----

C++:

// test_cpp.h

#pragma once

using namespace System;

using namespace logsolarmgr;

public ref class test_cpp

: public logsolarmgr::PluginAPI::ILSDataSource

{

public:

test_cpp()

{

}

virtual String^ GetName()

{

return gcnew String("test cpp: (" +
AppDomain::CurrentDomain->BaseDirectory+ ")");

}

};