You briefly saw in Chapter 1 how to declare a new class called
HelloWorld. In Chapter 2, you learned about the built-in primitive types included with C#. Since you have now also learned about control flow and how to declare methods, it is time to discuss defining your own types. This is the core construct of any C# program; this support for classes and the objects created from them is what makes C# an object-oriented language.
This chapter introduces the basics of object-oriented programming using C#. A key focus is on how to define classes, which are the templates for objects themselves.
All of the constructs of structured programming ...