How to upgrade a VB6 app with .NET components

Question

I want to make a change to a VB6 app which consists of a .EXE, no VB6 DLLs but a handful of .NET DLLs.

The interop is achieved by a one of the .NET dlls being referenced by the VB6 app which seems to require REGASM-ing of an associated .tlb file.

If I want to change only the VB6 app .exe, could I just compile it and drop it into the app folder on existing installations or are there going to be binding issues?

Answer 1

When you regasm using this approach be sure to Use /codebase so that the application can live in the same folder as the DLL(s).

As a side note you may wish to actually specify the DispID of your methods on your Dll's so that if you change your Dll you won't need to change your application (which only really is a problem if you cause Alphabetic reordering of method names) by adding a new Method.