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

Ternary operators

In VB, the ternary operator allows you to write more concise code for conditional statements that evaluate a single value. The ternary operator is a shorthand way of writing an If-Then-Else statement that assigns a value to a variable based on a condition.

The syntax of the ternary operator in VB is as follows:

variable = If(condition, trueValue, falseValue)

In this syntax, variable is the name of the variable to which the result of the ternary operator is assigned, condition is the condition that is evaluated, trueValue is the value set to variable if the condition is true, and falseValue is the value assigned to variable if the condition is false.

Here’s an example of how to use the ternary operator in VB.NET:

Dim var1 As Integer = 5
Dim var2 As Integer = 10
Dim largestNum As Integer = If(var1 > var2, var1, var2)
Console.WriteLine("The largest number is: " & largestNum)

In this example, the ternary operator assigns the larger...