Introduction to Application Frameworks
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An application framework is a set of reusable designs and code that can assist in the development of software applications. Xin Chen helps you get a better grip on this concept and argues for the usefulness of application frameworks. This article is excerpted from chapter one of the book
Developing Application Frameworks in .NET,by Xin Chen (Apress, 2004, ISBN: 1590592883).
AS THE AUTHOR of this book I have a single goal, which is to sell you on the idea of application frameworks. Throughout this book, I will talk about many aspects of application frameworks. I will explain, for example, why a framework is important in application development, and what techniques can be used in developing an application framework. I believe in explaining through concrete examples, so I will show you how to develop an application framework through a sample framework that I have developed, called SAF, which is short for Simplified Application Framework.
The SAF sample framework is written in C#, a computer programming language that provides object-oriented features for the development of an application framework. Some good hands-on experience with the Microsoft .NET Framework, C#, and object-oriented programming would undoubtedly be of great benefit in understanding the technical aspects of this topic. Many characteristics of .NET technologies to which we will refer in discussing application frameworks are advanced topics that you may have read about but have not yet used yourself, and you can take this opportunity to see how many of those .NET features are actually implemented and used in the sample framework. The “gang of four” (GOF) design patterns discussed in this book are another area in which you can learn a great deal about good application design. Application frameworks often rely on those patterns for the reuse of their designs. You will learn more about many of the GOF design patterns as I show you how they are implemented in the framework throughout the book. If you buy into the idea of application frameworks, and at the same time learn about many .NET technologies and design patterns that you can use in your projects after reading this book, you will make me a happy author.
 This chapter is from Developing Application Frameworks in .NET by Xin Chen (Apress, 2004, ISBN: 1590592883). Check it out at your favorite bookstore today. Buy this book now.
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