Illustrates how to declare classes, object references, and create objects

 
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example5_1.cs illustrates how to declare
  classes, object references, and create objects
*/


// declare the Car class
class Car
{

  // declare the fields
  public string make;
  public string model;
  public string color;
  public int yearBuilt;

  // define the methods
  public void Start()
  {
    System.Console.WriteLine(model + " started");
  }

  public void Stop()
  {
    System.Console.WriteLine(model + " stopped");
  }

}


public class Example5_1
{

  public static void Main()
  {

    // declare a Car object reference named myCar
    Car myCar;

    // create a Car object, and assign its address to myCar
    System.Console.WriteLine("Creating a Car object and assigning " +
      "its memory location to myCar");
    myCar = new Car();

    // assign values to the Car object's fields using myCar
    myCar.make = "Toyota";
    myCar.model = "MR2";
    myCar.color = "black";
    myCar.yearBuilt = 1995;

    // display the field values using myCar
    System.Console.WriteLine("myCar details:");
    System.Console.WriteLine("myCar.make = " + myCar.make);
    System.Console.WriteLine("myCar.model = " + myCar.model);
    System.Console.WriteLine("myCar.color = " + myCar.color);
    System.Console.WriteLine("myCar.yearBuilt = " + myCar.yearBuilt);

    // call the methods using myCar
    myCar.Start();
    myCar.Stop();

    // declare another Car object reference and
    // create another Car object
    System.Console.WriteLine("Creating another Car object and " +
      "assigning its memory location to redPorsche");
    Car redPorsche = new Car();
    redPorsche.make = "Porsche";
    redPorsche.model = "Boxster";
    redPorsche.color = "red";
    redPorsche.yearBuilt = 2000;
    System.Console.WriteLine("redPorsche is a " + redPorsche.model);

    // change the object referenced by the myCar object reference
    // to the object referenced by redPorshe
    System.Console.WriteLine("Assigning redPorsche to myCar");
    myCar = redPorsche;
    System.Console.WriteLine("myCar details:");
    System.Console.WriteLine("myCar.make = " + myCar.make);
    System.Console.WriteLine("myCar.model = " + myCar.model);
    System.Console.WriteLine("myCar.color = " + myCar.color);
    System.Console.WriteLine("myCar.yearBuilt = " + myCar.yearBuilt);

    // assign null to myCar (myCar will no longer reference an object)
    myCar = null;

  }

}

1.	simulate a bank account
2.	Using Initializers
3.	A simple inventory example
4.	Declaring and Defining Classes
5.	Declaring Class Instances
6.	Assign value to class
7.	Declare class and use it
8.	Illustrates how to assign default values to fields using initializers
9.	illustrates how to use a 'has a' relationship
10.	Illustrates nested classes
11.	Multiple constructors in a class definition
12.	Demonstrate the use of a nested class to contain data
13.	Show name hiding in a derived class
14.	Illustrates hiding
15.	Variable in and out a class
16.	Create class
17.	A program that uses the Building class
18.	This program creates two Building objects
19.	Return an object
20.	Uses a class from Example16_3a.cs
21.	A Simple C# Class
22.	Persons Info class
23.	Message class
24.	Point class

Illustrates how to declare classes, object references, and create objects : Class Definition « Class Interface « C# / C Sharp

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