Wanted: Sample Source Code for Mobile WinForms Apps

Can anyone point me to some sample mobile winforms apps I could expect to
run on my smart phone? I've been google searching and have been unable to
find anything except a minimal hello world program.

(I accidently posted a similar query in the aspnet.mobile forum when I later
realized I was interested in Winforms, not ASP.NET. So I have waited a while
before posting here).

I am specifically interested in some sample source code to implement an
audio recorder.

Thank you,
Siegfried