Question

I am learning C++/CLI and attempting to build an Interop component for my C# project. I’m not sure what this error means or how to resolve it? Any ideas?

#pragma once

using namespace System;

namespace Firewall {

    public ref class Firewall
    {
        void StartFirewall(){};
    }
}

Answer 1

Unlike C#, C++ requires a semicolon after a type definition.

public ref class Firewall
{
    void StartFirewall(){} // doesn't require semicolon here
}; // needs semicolon here.

_{In C#, you can actually have semicolons after type definitions (not recommended though) and that will be ignored. It is there for the sake of consistency with C++ syntax.}