Examples of what exactly?
WPF = Design focused.
This allow you to design your own design of the program more and easier.
WinForm = Classic windows programs.
If you're coding for just coding and not so much about the user-interface.
I would suggest this, WPF isn't that much used from what I know.
All in all:
I have used WinForms most of my time coding.
Lately I have been looking on WPFs, but it's not giving me the same options as I'm used to do.