I have followed the link you have referenced. My results are different.
1. No files were added to the app_code folder (in fact my whole project doesn't contain one)
2. This is what i have inside my svc file
// NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "PaWebSerives" in code, svc and config file together.
// NOTE: In order to launch WCF Test Client for testing this service, please select PaWebSerives.svc or PaWebSerives.svc.cs at the Solution Explorer and start debugging.
public class PaWebSerives : IPaWebSerives
public void DoWork()
Further what do i need to do from here?