Do we still need ServiceBase and etc. when using WCF?

[Guest]

Hello, friends,

When I read WCF service samples, I found:

non of them use ServiceBase, which is generated by c#.net 2005 automatically;
non of them mention adding ProjectInstaller, which is said a must step to
create a service;
non of them reference to System.ServiceProcess;
non of them talk about the above issues;

I am confused. Do we still need those (ServiceBase, ProjectInstall,
System.ServiceProcess, and etc.) to create windows service when using WCF
features? Or, the WCF makes all of them obsolete?

Thanks.