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[book] [en] Pro C# 2008 and the NET 3.5 Platform Fourth Edition

// MiniVan 'is-a' Car.

class MiniVan : Car

{

}

So, what have we gained by extending our MiniVan from the Car base class? Simply put, MiniVan



objects now have access to each public member defined within the parent class. Given the relation

between these two class types, we could now make use of the MiniVan type like so:

static void Main(string[] args)

{

Console.WriteLine("***** Basic Inheritance *****\n");



...

// Make a MiniVan type.

MiniVan myVan = new MiniVan();

myVan.Speed = 10;

Console.WriteLine("My van is going {0} MPH",

C H A P T E R   6  

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8849CH06.qxd  10/1/07  10:35 AM  Page 186




myVan.Speed);

Console.ReadLine();

}

Notice that although we have not added any members to the MiniVan class, we have direct



access to the public Speed property of our parent class, and have thus reused code. Recall, however,

that encapsulation is preserved; therefore the following code results in a compiler error:

static void Main(string[] args)

{

Console.WriteLine("***** Basic Inheritance *****\n");



...


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