is an abstract class a type of interface?

c#, interface, oop

Solution

In C#, interfaces are distinct from classes (even abstract classes);

- interfaces can only define the API (method signatures, event declarations, property declarations), not the implementation (fields, method bodies, etc)

- you can only inherit one base class, but you can implement multiple interfaces

But they have similarities in some usages - for example when used in an abstract factory implementation.

Problem

Original source