Property of interface implemented by c# class not accessible from c++/cli

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I'm trying to implement a native interface to a class developed in c#, using VS2013. Here's a simplified version of it:

namespace ManagedTypes
{
    public static class CaptureFile
    {
        public static IPacketList GetPackets() { new PacketList(); }
    }
}

Here's the definition of the IPacketList interface:

namespace ManagedTypes
{
    public interface IPacketList: IReadOnlyList<IPacket>
    {
    }
}

Just to be thorough, IReadOnlyList<T> (in mscorlib) is declared as:

public interface IReadOnlyList<out T> : IReadOnlyCollection<T>, IEnumerable<T>, IEnumerable
{
    T this[int index] { get; }
}

and IReadOnlyCollection<T> (also is mscrolib) as

public interface IReadOnlyCollection<out T> : IEnumerable<T>, IEnumerable
{
    int Count { get; }
}

So, from C#, I can do something like:

var n = CaptureFile.GetPackets().Count;

But if I try to do something similar from C++:

auto n = CaptureFile::GetPackets()->Count;

I get the following compilation error:

Error   2   error C2039: 'Count' : is not a member of 'ManagedTypes::IPacketList'   C:\Hg\DP1000-DEV\src\Spikes\MixedModeSample\MixedMode\MixedModeApi.cpp  9   1   MixedMode

What am I missing here?

asked 15 secs ago

Patrice Tremblay

11

Property of interface implemented by c# class not accessible from c++/cli