C# 0 The Complete Reference

Show( )

.

One other point: Notice that 

new

 is used in this program to tell the compiler that you 

know a new method called 

Show( )

 is being declared that hides the 

Show( )

 in 

A

.

Creating a Multilevel Hierarchy

Up to this point, we have been using simple class hierarchies consisting of only a base class 

and a derived class. However, you can build hierarchies that contain as many layers of 

inheritance as you like. As mentioned, it is perfectly acceptable to use a derived class as a 

base class of another. For example, given three classes called