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

Storing more than one value

An array is a collection of variables of the same data type. In VB, you can create arrays to store multiple values of the same data type in a single variable. Here’s how to declare an array in VB:

Dim myArray(4) As Integer

In this example, an array called myArray is declared to hold five integer values (0 to 4).

You can also assign values to an array at the time of declaration:

Dim myArray(2) As String
myArray = {"red", "green", "blue"}

In this example, an array called myArray is declared to hold three string values. The values are assigned to the collection at the time of declaration.

To access the values in an array, you use an index number that specifies the position of the value within the array. The first element of the array has an index of 0. Here’s an example:

Dim myArray(2) As String
myArray = {"red", "green", "blue"}
Console.WriteLine(myArray(0))
Console...