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Visual Basic Design Patterns: VB 6.0 and VB.NET by James W. Cooper

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Chapter 3. Using Classes and Objects in VB

The original versions of Visual Basic (1.0 through 3.0) did not contain much in the way of object-oriented features, and many programmers' habits were formed by the features of these early versions. However, starting with Visual Basic 4.0, you could create Class modules as well as Form modules, and use them as objects. In this chapter we'll illustrate more of the advantages of using class modules. In the following chapter we'll extend these concepts for the more fully object-oriented VB.NET.

A Simple Temperature Conversion Program

Suppose we wanted to write a visual program to convert temperatures between the Celsius and Fahrenheit temperature scales. You may remember that water freezes at 0° on the Celsius ...

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