Four layers of class hierarchy : Class Inheritance « Class Interface « C# / C Sharp

1. C# / C Sharp
2. Class Interface
3. Class Inheritance

Four layers of class hierarchy

/*
 * 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 MyMainClass3
  {
    static void Main(string[] args)
    {
      //The function called is based
      //upon the type called by new.
      A MyA = new D();
      B MyB = new C();

      MyA.Display();    //Calls D Display  
      MyB.Display();    //Calls C Display
      // followed by B's Display //via the base keyword
    }
  }
  class A
  {
    public virtual void Display()
    {
      Console.WriteLine("Class A's Display Method");
    }
  }
  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");
      base.Display();
    }
  }
  class D: C
  {
    public override void Display()
    {
      Console.WriteLine("Class D's Display Method");
    }
  }

}

           
       

Related examples in the same category

1.	Inheritance 3
2.	An example of inheritance-related name hiding
3.	Using base to overcome name hiding
4.	Call a hidden method
5.	A multilevel hierarchy 1
6.	Demonstrate when constructors are called
7.	illustrates inheritance
8.	Private field and public Property in inheritance
9.	Illustrates versioning
10.	Class Hierarchy test
11.	Class Hierarchy with two children class
12.	A simple class hierarchy
13.	A base class reference can refer to a derived class object
14.	Pass a derived class reference to a base class reference
15.	a multilevel hierarchy
16.	Build a derived class of Vehicle for trucks