Class hierarchy: override and virtual

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 */
using System;

namespace Client.Chapter_5___Building_Your_Own_Classes
{
  public class MyMainClass13
  {
    static void Main(string[] args)
    {
      //The function called is based
      //upon the type called by new.
      B MyB = new C();

      MyB.Display();    //Calls C's Display
    }
  }
  abstract class A
  {
    public abstract void Display();
  }
  class B: A
  {
    public override void Display()
    {
      Console.WriteLine("Class B's Display Method");
    }
  }
  class C: B
  {
    public override void Display()
    {
      Console.WriteLine("Class C's Display Method");
    }
  }
  class D: C
  {
    public override void Display()
    {
      Console.WriteLine("Class D's Display Method");
    }
  }

}

Related examples in the same category

1.	Polymorphism
2.	Virtual keyword can be used to start a new inheritance ladder
3.	Virtual and overload
4.	Use virtual methods and polymorphism
5.	Demonstrate a virtual method
6.	When a virtual method is not overridden, the base class method is used
7.	illustrates polymorphism
8.	Demonstrates the use of a virtual method to override a base class method
9.	Demonstrates the use of a virtual property to override a base class property
10.	Method override 3
11.	Test Polymorphism Virtual Functions

Class hierarchy: override and virtual : Override Virtual « Class Interface « C# / C Sharp

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