Yeah, I Agree, that example he uses is a bit dodgy but I can understand why he didn't want to write an entire DI engine for a beginners tutorial. Anyway, Like I say, I found it was an ok place to start before moving on to other stuff.

hey, I just started taking a look at this myself. Try the following - takes you through building your own (if very simple IOC).. http://weblogs.asp.net/sfeldman/archive/2008/02/14/understanding-ioc-container.aspx[^] Hope that helps.

You can work them out pretty quickly by not only asking the differences between interfaces and base classes but how and when it is best to apply each. I wouldn't bother asking silly questions like the number of piano tuners in london. Remeber, you're hiring a junior developer. They're likely to be a bit shy so don't terrify them within 2 minutes of the interview starting.