Build classes for the business logic layer in .NET

Classes are central to development in .NET. In this chapter download from Doing Objects in Visual Basic 2005, learn how to build classes for the business logic layer. Study the fundamentals of creating classes and defining properties and methods. Then, investigate more advanced topics such as using generics and building a base business object class. The chapter covers the basics of how to create a class and then builds on those basics to detail some new Visual Basic 2005 features, such as XML comments and generics. Specific chapter coverage includes:

• Creating a class
• Documenting the class with XML comments
• Adding exception classes to your class file
• Defining properties
• Defining property accessibility
• Understanding generics
• Handling Nullable types
• Defining methods
• Passing parameters ByVal or ByRef
• Overloading methods
• Marking methods as obsolete
• Creating a base business object class
• Overriding base class members

Title: Doing Objects in Visual Basic 2005
Author: Deborah Kuratai
Publisher: Addison Wesley Professional
Chapter 5: Building the Business Logic Layer
ISBN: 0-321-32049-2; Copyright 2007 Addison Wesley Professional. All rights reserved.
Used with permission from the publisher. Available from booksellers or direct from Addison Wesley Professional