Dynamic polymorphism using interfaces vs classes.

Question

Dear Friends, I am kind of novice in C# and just trying to clear my concepts. In C# we can achieve dynamic polymorphism using interfaces as well as using classes. What make it significant that we prefer to use one over the other one? In what type of situations we prefer to use interfaces over normal classes. I can fully understand that my question is quite basic but I need to understand with a practical example if possible or with some explanation. Thanks.

Answer 1

Hi, Imran Jalali
You could refer to the similar thread:Interface vs Abstract Class and Jay provided a simple example in answer.
Pilot: abstract class C-141 Pilot: concrete class ISafety Officer: interface

Abstract classes are used for Modelling a class hierarchy of similar looking classes Interface is used for Communication between 2 similar / non similar classes which does not care about type of the class implementing Interface

Best regards,

Minxin Yu

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