C# Programming - Polymorphism - Discussion

But what about the override keyword. Is it that it is used only in cases where abstract and virtual functions are defined?

@Sree.

For replacing a member of a base class we use "new" keyword but redefine a member of a bass class we use "override".

Hi,

When we declare a member function with new keyword in derived class it means we are hiding the behavior of base class member function in derived class and implement new behavior for a member function in derived class. Derived class member function behavior does not override with base class member function.

But when we use override keyword with derived class member function means we are replacing the behavior the base class member function in derived class.

Can we use another keyword?

Writing 'new' keyword for a method in derived class won't replace the method which is existing base class. This concept is called as 'Shadowing'. In this concept by default we can access derived Method and we can access the existing method also.

We can also use 'new' keyword for object creation.

I think the override is the correct answer.

Yes, t is hiding/shadowing method.