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

Classic ASP Request object

In Classic ASP, the Request object is a built-in server-side object that’s used to retrieve information sent by the client (usually a web browser) to the web server. The Request object allows you to access various data types, including form data, query parameters, cookies, and more, making it essential for processing client requests and building dynamic web applications.

Here are some common properties and methods of the Request object in Classic ASP:

  • Form collection (Request.Form): Provides access to the data sent to the server using the HTTP POST method (usually from HTML forms).

    Example: Request.Form("username") returns the value submitted with the input field named "username".

  • Query string (Request.QueryString): Provides access to the data sent to the server using the HTTP GET method (usually from URLs).

    Example: Request.QueryString("id") returns the value of the "id" parameter from the URL.

  • ...