Book Image

Visual Basic Quickstart Guide

By : Aspen Olmsted
Book Image

Visual Basic Quickstart Guide

By: Aspen Olmsted

Overview of this book

Whether you’re an absolute beginner or an experienced developer looking to learn the Visual Basic language, this book takes a hands-on approach to guide you through the process. From the very first chapters, you'll delve into writing programs, exploring core concepts such as data types, decision branching, and iteration. Additionally, you’ll get to grips with working with data structures, file I/O, and essential object-oriented principles like inheritance and polymorphism. This book goes beyond the basics to equip you with the skills to read and write code across the entire VB family, spanning VB Script, VBA, VB Classic, and VB.NET, enabling you to handle legacy code maintenance with ease. With clear explanations, practical examples, and hands-on exercises, this book empowers you to tackle real-world software development tasks, whether you're enhancing existing projects or embarking on new ones. It addresses common challenges like distinguishing between the variations of the VB programming language to help you choose the right one for your projects. Don't let VB's extensive legacy daunt you; embrace it with this comprehensive guide that equips you with practical, up-to-date coding skills to overcome the challenges presented by Visual Basic's rich history of over two decades.
Table of Contents (27 chapters)
Free Chapter
1
Part 1:Visual Basic Programming and Scripting
9
Part 2:Visual Basic Files and Data Structures
14
Part 3:Object-Oriented Visual Basic
20
Part 4:Server-Side Development

Building the project in the VB.NET console

This simple console application is written in the VB.NET programming language. We will start by exploring the different classes we must develop for the project. The following code defines a VB.NET class named clsGrade that encapsulates a concept related to grading or scoring. It provides a private field, piScore, to store the numerical score, and a public property, Score, that allows getting and setting the value of the score.

Here’s a breakdown of the code that follows:

  • Public Class clsGrade: This line declares a public class named clsGrade.
  • Private piScore As Integer: This line declares a private field named piScore of type Integer, which is used to store the numeric score.
  • Public Property Score As Integer: This line defines a public property named Score. Properties allow access to or modify private fields while encapsulating the implementation details.
  • Get: This block defines the getter for the Score property...