C#设计模式（影印版）

　　设计模式有助于开发人员利用整个软件开发群体的智慧开发健壮的高质量软件。《C#设计模式（影印版）》是第一部完整的面向C#和.NET程序员的设计模式指导著作。 Steven John Metsker解释了用C#作为面向对象编程语言时，如何利用设计模式来创建简洁的代码，与此同时，还能有效地利用内容广泛的Microsoft.NET框架类库。 针对所有23个经典的“四个小姐”（Gang of Four）设计模式，Metsker提供了详细的代码实例，这些代码实例使用了C#和.NET框架，同时提供了有助于快速掌握相关技巧的程序设计习题。这些习题广泛地使用了UML标准表示法的基础上学习掌握相关技能。 如果读者已经基于其他程序设计语言使用了软件设计模式，那么本书有助于加深读者的理解，增加读者的自信心，并能帮助读者在各种类型的C#工程中使用设计模式。如果读者是一位Microsoft程序员，但是还不熟悉设计模式，那么本书是一本理想的实践入门指导。

　　STEVEN JOHN METSKER 在设计模式、面向对象程序设计及软件设计方法学等领域有广泛的著述。Steven是CapTech风险投资公司的一位软件业务咨询人员，经常在OOPSLA会议上发言。他的著作发表在《Java Report》、《JOOP》、《Distributed Object Computing》、《Object Maazine》等杂志上。Steven在Addison-Wesley公司出版的著作包括：《Design Patterns Jave Workbook》（影印版《设计模式Java手册》已由中国电力出版社出版）和《Building Parsers in Java》。

Preface
Chapter 1: Introduction
Why Patterns?
Why Design Patterns?
Why C#?
UML
Challenges
The Organization of this Book
Welcome to Oozinoz!
Summary
Part 1: Interface Patterns
Chapter 2: Introducing Interfaces
Interfaces and Abstract Classes
Interfaces and Delegates
Interfaces and Properties
Interface Details
Summary
Beyond Ordinary Interfaces
Chapter 3: Adapter
Adapting to an Interface
Class and Object Adapters
Adapting Data in .NET
Summary
Chapter 4: Facade
An Ordinary Facade
Refactoring to Facade
Facades， Utilities， and Demos
Summary
Chapter 5: Composite
An Ordinary Composite
Recursive Behavior in Composites
Composites， Trees， and Cycles
Composites with Cycles
Consequences of Cycles
Summary
Chapter 6: Bridge
An Ordinary Abstraction
From Abstraction to Bridge
Drivers as Bridges.
Database Drivers
Summary
Part 2: Responsibility Patterns
Chapter 7: Introducing Responsibility
Ordinary Responsibility
Controlling Responsibility with Accessibility
Summary
Beyond Ordinary Responsibility
Chapter 8: Singleton
Singleton Mechanics
Singletons and Threads
Recognizing Singleton
Summary
Chapter 9: Observer
C# Support for Observer
Delegate Mechanics
A Classic Example---Observer in GUIs
Model/View/Controller
Layering
Summary
Chapter 10: Mediator
A Classic Example---GUI Mediators
Relational Integrity Mediators
Summary
Chapter 11: Proxy
A Simple Proxy
A Data Proxy
Remote Proxies
Summary
Chapter 12: Chain of Responsibility
An Ordinary Chain of Responsibility
Refactoring to Chain of Responsibility
Anchoring a Chain
Chain of Responsibility without Composite
Summary
Chapter 13: Flyweight
Immutability
Extracting the Immutable Part of a Flyweight
Sharing Flyweights
Summary
Part 3: Construction :Patterns
Chapter 14: Introducing Construction
A Few Construction Challenges
Summary
Beyond Ordinary Construction
Chapter 15: Builder
An Ordinary Builder
Building under Constraints
A Forgiving Builder
Summary
Chapter 16: Factory Method
A Classic Example　Enumerators
Recognizing Factory Method
Taking Control of Which Class to Instantiate
Factory Method in Parallel Hierarchies
Summary
Chapter 17: Abstract Factory
A Classic Example GUI Kits
Abstract Factories and Factory Method
Namespaces and Abstract Factories
Summary
Chapter 18: Prototype
Prototypes as Factories
Prototyping with Clones
Summary
Chapter 19: Memento
A Classic Example　Using Memento for Undo
Memento Durability
Persisting Mementos across Sessions
Summary
Part 4: Operation Patterns
Chapter 20: Introducing Operations
Operations and Methods
Signatures
Delegates
Exceptions
Algorithms and Polymorphism
Summary
Beyond Ordinary Operations
Chapter 21: Template Method
A Classic Example--Sorting
Completing an Algorithm
Template Method Hooks
Refactoring to Template Method
Summary
Chapter 22: State
Modeling States
Refactoring to State
Making States Constant
Summary
Chapter 23: Strategy
Modeling Strategies
Refactoring to Strategy
Comparing Strategy and State
Comparing Strategy and Template Method
Summary
Chapter 24: Command
A Classic Example--Menu Commands
Using Command to Supply a Service
Command Hooks
Command in Relation to Other Patterns
Summary
Chapter 25: Interpreter
An Interpreter Example
Interpreters， Languages， and Parsers
Summary
Part 5: Extension Patterns
Chapter 26: Introducing Extensions
Principles of OO Design
The Liskov Substitution Principle
The Law of Demeter
Removing Code Smells
Beyond Ordinary Extensions
Summary
Chapter 27: Decorator
A Classic Example--Streams
Function Wrappers
Decorator in GUIs
Decorator in Relation to Other Patterns
Summary
Chapter 28: Iterator
Ordinary Iteration
Thread-Safe Iteration
Iterating over a Composite
Summary
Chapter 29: Visitor
Visitor Mechanics
An Ordinary Visitor
Visitor Cycles
Visitor Controversy
Summary
Appendix A: Directions
Get the Most Out of This Book
Understand the Classics
Weave Patterns into Your Code
Keep Learning
Appendix B: Solutions
Appendix C: Oozinoz Source
Acquiring and Using the Source
Building the Oozinoz Code
Helping the Oozinoz Code Find Files
Testing the Code with NUnit
Finding Files Yourself
Summary
Appendix D: UML at a Glance
Classes
Class Relationships
Interfaces
Delegates and Events
Objects
States
Glossary
Bibliography，
Index