How to debug windows service

) Add such code to the service's entry, static Main() function,

#if DEBUG
            System.Diagnostics.Debugger.Launch();
#endif

2) install your windows service appliation with visual studio command tool. command line as follow:

installUtil.exe <Application's name>

3) Open your windows service source code with visual studio, start your windows service at service tool (you can find it at administrator's tool control panel),
then it will pop-up a dialog ask you if want to debug, select yes, that's ok, you can debug your application.

4) If you have modified your source code, you need uninstall the windows service, build your source code, reinstall agian.