Overriding Extension Methods

Question

I\'ve been thinking about using extension methods as a replacement for an abstract base class. The extension methods can provide default functionality, and can be \'overridd

Answer 1

This is definitely a bad idea. Extension methods are bound statically which means that, unless your calling the override on an object whose compile-time type is the sub-type, you'll still continue to call the extension method. Bye-bye polymorphism. This page has a good discussion of the perils of extension methods.