Chapter 9Defining Classes Code Downloads for this Chapter

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In Chapter 8, you looked at the features of object-oriented programming (OOP). In this chapter, you put theory into practice and define classes in C#. You won't go so far as to define class members in this chapter, but you will concentrate on the class definitions themselves.

To begin, you explore the basic class definition syntax, the keywords you can use to determine class accessibility and more, and the way in which you can specify inheritance. You also look at interface definitions because they are similar to class definitions in many ways.

The rest of the chapter covers various related topics that apply when defining classes in C#.

Class Definitions in C#

C# uses the class keyword to define classes:

class MyClass { // ...

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