How to write a "wrapper" for my case

I have a program writte开发者_开发百科n in C and running in unix. But due to certain platform change, now I have to run it in C# to integrate it into an system talking with SQL database.

So how can I do this? Is it possible to write a wrapper to let it run in windows?

Thanks in advance.

---

I'm not sure if this helps, but you might want to look into Mono.