First off, let’s get an understanding of interfaces and why they are needed in programming. An interface is strictly a contract; it doesn’t have any implementation. An interface contains only member ...

Extension methods provide a great way for extending a class functionality -- but it's interfaces that let you use those methods anywhere you want. Extension methods let you add functionality to an ...

If you need to have objects look alike but don't have any code to share, you don't need inheritance -- you need an interface. Here's an example of how interfaces provide a more flexible way to deal ...