[RESOLVED] Inheritance and Polymorphism

[jmcilhinney]

So an integer doesn't really inherit from type Object, for the sake of efficiency, though it acts as if it does, for the sake of consistency.

There's no acting. All structures, including Int32, are derived from the System.ValueType class, which inherits Object. Absolutely every type in the .NET Framework is derived from the Object class. Just read the documentation for any type and check its inheritance hierarchy. You'll see that every single one of them starts at System.Object.