Professional Design Patterns in VB .NET: Building Adaptable Applications is not merely design pattern theory. No, no. Instead, the authors show design patterns applied to real-world architectural scenarios, so you can witness the patterns in action, reaping benefits along the way! The core of this book contains three case studies, which explain design pattern application in each main tier of an application: data, business, and presentation layers. These case studies flesh out your understanding of design patterns, illustrating how the scenarios can be realistically employed and recognized by all Visual Basic .NET programmers. Also featured: how design patterns can be used in conjunction with .NET Remoting, to be applied across tiers, as well as within them. And since many VB .NET programmers may not be wholly familiar with UML, the authors also provide a UML primer as an appendix.

Issues and questions regarding security and the .NET Framework are addressed.

A design pattern describes a common programming problem and a "template" solution. A design pattern approach to development brings reusable design and adaptability, and takes the notion of code reuse to a new level. Many design patterns are built on object-oriented techniques, so VB programmers had to wait until the release of Visual Basic NET for an opportunity to employ design patterns properly. This book gives a practical approach to using design patterns in VB.NET. We present example applications using design patterns so that you can see them in action and see the benefits that they bring. In separate chapters, we focus on the relevance of design patterns in the different tiers of a distributed n-tier architecture, and in the NET Remoting infrastructure that binds them. Along the way, we see how to recognize the need for a design pattern solution, and how to select, design, and implement the right patterns for the job. We also examine how parts of the NET Framework (like the NET Data Providers and NET Remoting) take advantage of design patterns and, consequently, do some of the work for us. Who is this book for? This book is primarily targeted at developers and architects interested in discussion and examples of design patterns coded in VB.NET. What is covered in this book? * An introduction to design patterns * The "Gang-of-Four" patterns * Model/View/Controller, Asynchronous Programming, and Store and Forward patterns * Examples of design patterns in the data tier, the business logic tier, and the presentation tier * The relevance and examples of design patterns in NET Remoting * A UML primer * Next steps - antipatterns and refactoring