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

Utilizing multidimensional arrays

Multidimensional arrays allow you to store and organize data in a spreadsheet-like structure with multiple dimensions. You can have arrays with two or more dimensions, such as two-dimensional arrays, three-dimensional arrays, and so on. Here’s an example of how you can declare an array with multiple dimensions:

Dim arrayName(size1, size2, ...) As DataType

For example, to declare and initialize a two-dimensional array of integers with five rows and 10 columns, you can use the following code:

Dim myMatrix(5, 10) As Integer

Array elements in multidimensional arrays are accessed using their indices for each dimension. You can retrieve or assign values to array elements as follows:

Dim value As Integer = myMatrix(4, 9)
myMatrix(4, 9) = 25

The previous code example accesses the element at the fourth row and tenth column. First, it retrieves the value, then assigns a new value to that cell of the multidimensional array.

To get the...