Sorry, I am not explaining myself correctly. This is not about business logic concepts. It is about files, Projects and Forms (the actual .cs files).

I want:

saleswindow.dll
customerwindow.dll
orderwindow.dll

Is each a separate Project (Sales Project, Customer Project, Order Project)? I need them separate for valid reasons.

I ask because I do not need Program.cs in every DLL. I don't need all of the extra folders the Project creates.

What is the most simple way? Or are Projects the only way?

Thanks guys, don't worry about the business concepts organizational logic.