How to change the class of an object dynamically in C#?

Question

Suppose I have a base class named Visitor, and it has 2 subclass Subscriber and NonSubscriber.

At first a visitor is start off from a NonSubscriber, i.e.

<         


        

Answer 1

Create a Subscriber constructor that takes a NonSubscriber object as a parameter, or create a method on the NonSubscriber object that returns a Subscriber to save you having to writer the mappping code in multiple places.