Structural Design Patterns and .NET Framework 2（结构设计模式和。）.pdf

JOURNAL OF OBJECT TECHNOLOGY Online at http://www.jot.fm. Published by ETH Zurich, Chair of Software Engineering ©JOT, 2006 Vol.5, No.8, November - December 2006 Structural Design Patterns and .NET Framework 2.0 Dhamayanthi N, Senior Manager, Talent Transformation, HCL Technologies Ltd, Chennai, India Thangavel P, Prof. Head, Dept. of Computer Science, University of Madras, Chennai, India There are many uncertainties in identifying and applying suitable design patterns while designing applications. Our goal is to investigate applications of design patterns in .NET Framework. Among the seven structural patterns described by Gang of Four (GOF), we have discussed five patterns from .NET perspective. As there is no official documentation available on the patterns used in the latest version of .NET Framework (version 2.0) currently, this study would be beneficial for .NET designers in understanding patterns behind the framework, which in turn would help them in applying relevant patterns while developing their aplications in .NET Framework. 1 INTRODUCTION Design Patterns provide generic, reusable designs that solve problems at the design level. A design pattern does not define code and is not specific to a given programming domain. Instead, it provides a proven, tested solution for a class of similar design problems. Design Patterns also lend common terminology that we can use to make our own designs easier to document and understand. Patterns describe techniques that experts have abstracted from multiple specific solutions. Identifying and understanding patterns provide two essential benefits [6]. First, they int