Preface Acknowledgments Part I Object-Oriented Programming in C# Chapter 1 What Am Design Patterns Defining Design Patterns The Learning Process Studying Design Patterns Notes on Object-Oriented Approaches C# Design Patterns How This Book Is Organized Chapter 2 Syntax of the O# Language Data Types Converting between Numbers and Strings Declaring Multiple Variables Numeric Constants Character Constants Variables Declaring Variables as You Use Them Multiple Equals Signs for Initialization A Simple C# Program Arithmetic Operators Increment and Decrement Operators Combining Arithmetic and Assignment Statements Making Decisions in C# Comparison Operators Combining Conditions The Most Common Mistake The Switch Statement C# Comments The Ornery Ternary Operator Looping Statements in C# The While Loop The Do-While Statement The For Loop Declaring Variables as Needed in For Loops Commas in For Loop Statements How C# Differs from C How C# Differs from Java Summary Chapter 3 Writing Windows C# Programs Objects in C# Managed Languages and Garbage Collection Classes and Namespaces in C# Building a C# Application The Simplest Window Program in C# Windows Controls Labels TextBox CheckBox Buttons Radio Buttons ListBoxes and ComboBoxes The Items Collection Menus ToolTips The Windows Controls Program Summary Programs on the CD-ROM Chapter 4 Using C/asses and Objects in C# What Do We Use Classes For A Simple Temperature Conversion Program Building a Temperature Class Converting to Kelvin Putting the Decisions into the Temperature Class Using Classes for Format and Value Conversion Handling Unreasonable Values A String Tokenizer Class Classes as Objects Class Containment Initialization Classes and Properties Programming Style in C# Delegates Indexers Operator Overloading Summary Programs on the CD-ROM Chapter 5 Inheritance Constructors Drawing and Graphics in C# Using Inheritance Namespaces Creating a Square from a Rectangle Public, Private, and Protected Overloading Virtual and Override Keywords Overriding Methods in Derived Classes Replacing Methods Using New Overriding Windows Controls Interfaces Abstract Classes Comparing Interfaces and Abstract Classes Summary Programs on the CD-ROM Chapter 6 UML Diagrams Inheritance Interfaces Composition Annotation WithClass UML Diagrams C# Project Files Chapter 7 Arrays, Files, and Exceptions in C# Arrays Collection Objects ArrayLists Hasbtables SortedLists Exceptions Multiple Exceptions Throwing Exceptions File Handling The File Object Reading a Text File Writing a Text File Exceptions in File Handling Testing for End of File A csFile Class Program on the CD-ROM Part 2 Creational Patterns Chapter 8 The Simple Factory Pattern How a Simple Factory Works Sample Code The Two Derived Classes Building the Simple Factory Using the Factory Factory Patterns in Math Computation Summary Thought Questions Programs on the CD-ROM Chapter 9 The Factory Method The Swimmer Class The Events Classes StraightSeeding CircleSeeding Our Seeding Program Other Factories When to Use a Factory Method Thought Question Program on the CD-ROM Chapter 10 The Abstract Factory Pattern A GardenMaker Factory The PictureBox Handling the RadioButton and Button Events Adding More Classes Consequences of Abstract Factory Thought Question Program on the CD-ROM Chapter 11 The Singleton Pattern Creating Singleton Using a Static Method Exceptions and Instances Throwing the Exception Creating an Instance of the Class Providing a Global Point of Access to a Singleton Other Consequences of the Singleton Pattern Programs on the CD-ROM Chapter 12 The Builder Pattern An Investment Tracker The Stock Factory The CheckChoice Class The ListboxChoice Class Using the Items Collection in the ListBox Control Plotting the Data The Final Choice Consequences of the Builder Pattern Thought Questions Program on the CD-ROM Chapter 13 The Prototype Pattern Cloning in C# Using the Prototype Cloning the Class Using the Prototype Pattern Dissimilar Classes with the Same Interface Prototype Managers Consequences of the Prototype Pattern Thought Question Programs on the CD-ROM Summary of Creational Patterns Part 3 Structural Patterns Chapter 14 The Adapter Pattern Moving Data between Lists Making an Adapter Using the DataGrid Detecting Row Selection Using a TreeView The Class Adapter Two-Way Adapters Object versus Class Adapters in C# Pluggable Adapters Thought Question Programs on the CD-ROM Chapter 15 The Bridge Pattern The Bridger Interface The VisList Classes The Class Diagram Extending the Bridge Windows Forms as Bridges Consequences of the Bridge Pattern Thought Question Programs on the CD-ROM Chapter 16 The Composite Pattern An Implementation of a Composite Computing Salaries The Employee Classes The Boss Class Building the Employee Tree Self-Promotion Doubly Linked Lists Consequences of the Composite Pattern A Simple Composite Composites in .NET Other Implementation Issues Thought Questions Programs on the CD-ROM Chapter 17 The Decorator Pattern Decorating a CoolButton Handling Events in a Decorator Layout Considerations Control Size and Position Multiple Decorators Nonvisual Decorators Decorators, Adapters, and Composites Consequences of the Decorator Pattern Thought Questions Programs on the CD-ROM Chapter 18 The Facade Pattern What Is a Database Getting Data Out of Databases Kinds of Databases ODBC Database Structure Using ADO.NET Connecting to a Database Reading Data [rom a Database Table Executing a Query Deleting the Contents of a Table Adding Rows to Database Tables Using ADO.NET Building the Facade Classes Building the Price Query Making the ADO.NET Facade The DBTable Class Creating Classes for Each Table Building the Price Table Loading the Database Tables The Final Application What Constitutes the Facade Consequences of the Facade Thought Question Program on the CD-ROM Chapter 19 The Flyweight Pattern Discussion Example Code The Class Diagram Selecting a Folder Handling the Mouse and Paint Events Flyweight Uses in C# Sharable Objects Copy-on-Write Objects Thought Question Program on the CD-ROM Chapter 20 The Proxy Pattern Sample Code Proxies in C# Copy-on-Write Comparison with Related Patterns Thought Question Program on the CD-ROM Summary of Structural Patterns Part 4 Behavioral Patterns Chapter 21 Chain of Responsibility Applicability Sample Code ListBoxes Programming a Help System Receiving the Help Command A Chain or a Tree Kinds of Requests Examples in C# The Chain of Responsibility Thought Question Programs on the CD-ROM Chapter 22 The Command Pattern Motivation Command Objects Building Command Objects Consequences of the Command Pattern The CommandHolder Interface Providing Undo Thought Questions Programs on the CD-ROM Chapter 23 The Interpreter Pattern Motivation Applicability A Simple Report Example Interpreting the Language Objects Used in Parsing Reducing the Parsed Stack Implementing the Interpreter Pattern The Syntax Tree Consequences of the Interpreter Pattern Thought Question Program on the CD-ROM Chapter 24 The Iterator Pattern Motivation Sample Iterator Code Fetching an Iterator Filtered Iterators The Filtered Iterator Keeping Track of the Clubs Consequences of the Iterator Pattern Programs on the CD-ROM Chapter 25 The Mediator Pattern An Example System Interactions between Controls Sample Code Initialization of the System Mediators and Command Objects Consequences of the Mediator Pattern Single Interface Mediators Implementation Issues Program on the CD-ROM Chapter 26 The Memento Pattern Motivation Implementation Sample Code A Cautionary Note Command Objects in the User Interface Handling Mouse and Paint Events Consequences of the Memento Thought Question Program on the CD-ROM Chapter 27 The Observer Pattern Watching Colors Change The Message to the Media Consequences of the Observer Pattern Program on the CD-ROM Chapter 28 The State Pattern Sample Code Switching between States How the Mediator Interacts with the StateManager The ComdToolBarButton Handling the Fill State Handling the Undo List The VisRectangle and VisCircle Classes Mediators and the God Class Consequences of the State Pattern State Transitions Thought Questions Program on the CD-ROM Chapter 29 The Strategy Pattern Motivation Sample Code The Context The Program Commands The Line and Bar Graph Strategies Drawing Plots in C# Making Bar Plots Making Line Plots Consequences of the Strategy Pattern Program on the CD-ROM Chapter 30 The Template Method Pattern Motivation Kinds of Methods in a Template Class Sample Code Drawing a Standard Triangle Drawing an Isosceles Triangle The Triangle Drawing Program Templates and Callbacks Summary and Consequences Programs on the CD-ROM Chapter 31 The Visitor Pattern Motivation When to Use the Visitor Pattern Sample Code Visiting the Classes Visiting Several Classes Bosses Are Employees, Too Catch-All Operations with Visitors Double Dispatching Why Are We Doing This Traversing a Series of Classes Consequences of the Visitor Pattern Thought Question Program on the CD-ROM Bibliography Index
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