>>>But the question still is how to make that determination without having some kind of code in table. I can't see any way around it.
>>
>>PMFJI,
>>
>>Just to elaborate a little on Viv's suggestion, you don't need any code in the table, just a class name and assembly name. The class could either implement an interface or inherit from a base class. There was a discussion about this in the Interfaces thread a couple of weeks ago.
>>
>>Bruce
>
>I believe it was in .NET forum (thread started by Kevin himself, if I recall correctly), but this is a VFP question.

I think this is a general design question - although it's in the VFP section the pattern is pretty much generic....