Mastering Microsoft® Visual Basic® 2008

Chapter 11. Working with Objects

This chapter continues the discussion of object-oriented programming (OOP) and covers some of its more-advanced, but truly useful, concepts: inheritance and polymorphism. Instead of jumping to the topic of inheritance, I'll start with a quick overview of what you learned in the previous chapter and how to apply this knowledge.

Inheritance is discussed later in this chapter, along with polymorphism, another powerful OOP technique, and interfaces. But first make sure that you understand the basics of OOP because things aren't always as simple as they look (but are quite often simpler than you think).

In this chapter, you'll learn how to:

• Extend existing classes using inheritance

• Develop flexible classes using polymorphism ...