Enterprise Project Euler Framework

So I've been been delightfully progressing through the Project Euler exercises and I've completed 12 so far. I'm programming in C and collecting all the exercises to a single directory and compiling the answers that I have named 1.c, 2.c, etc. manually. As a best-practices aware ENTERPRISE PROGRAMMER I cannot go on more like this.

So my plan is to switch to C# and collect all the algorithms to a single WPF application running on Windows 7. So far I have identified a need for a harmonized prime number framework at least, and if I dig deeper to the actual problems - I'm too busy thinking about the C# stuff right now - I may be able to find other similarities.

Any thoughts on this? What do /prog/rammers see as the core facilitators of the proposed framework?

>>1'
>enterprise programmer
>C#

Go back to C you moron. If needed do CL.