Hi,

I've made a C# dll that I'm accessing with VB6 clients. My problem is
that when I make changes to the C# dll the clients stop working. This
makes bug fixes quite an ordeal.

I've read that for versioning purposes it is best to make a separate
interface that is exposed to the COM world. Comments about this approach
are also welcome.

--------------------------------------------------------------
[Guid("<My GUID from the tool>")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IClass_A
{
    [DispId(1)]
    string EchoString(string a);
}

[ClassInterface(ClassInterfaceType.None)]
public class Class_A : IClass_A
{
    public string EchoString(string a)
    {
        return a;
    }
}
--------------------------------------------------------------

When I recompile my project the clients lose their reference to the dll.
In VB I have the project option to make binary compatibable compilations
so how do I do it in .Net world?

I guess I have to give a GUID to the type library but I haven't found
any samples of this. Can anyone shed some light into this?

Cheers,

    Kai Hietala