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C# - Gang Of Four - Design Patterns, Elements Of Reusable Object Oriented Software Erich Gamma, John M. Vlissides, Ralph Johnson, Richard Helm
Publisher: Addison-Wesley Professional

Something I would encourage *everyone* to do is to read the first two paragraphs of the "gang of four" Design Patterns book, Chapter 1, Introduction. I thought it would be an interesting exercise to try and port each of the patterns described in the Gang of Four's seminal work Design Patterns: Elements of Reusable Object-Oriented Software into C#. The Gang of Four (GoF)(from Design Patterns: Elements of Reusable Object-Oriented Software, Addison-Wesley Professional Computing Series, by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides). These code smells are described by Micah and Robert Martin in their book Agile Principles, Patterns, and Practices in C# on page 104. Between objects that have been adapted to deal with certain forces can be observed both in the "real world" and in software objects. The examples follow in sections 2 through 4. I'd recommend the GoF Design patterns : elements of reusable object-oriented software over the Head First Design Patterns book in this case, I think it simply had more information. Design Patterns - Factory Method PatternA simple example of the Factory Method, design pattern in C#From Sketch to Oil PaintingPeople only remember the oil paintings, not the sketches. Opacity – Opaque software is difficult to understand. This paper presents a real world, non software instance of each design pattern from the book, Design Patterns - Elements of Reusable Object-Oriented Software [13]. Head First Design Patterns; Head First Java; Design Patterns: Elements of Reusable Object-Oriented Software; Fundamentals of Object-Oriented Design in UML .. In fact Sometimes having the forced formalism of a "strong OO" language like AS, C#, or Java can make you see where a lot of these patterns came from. The idea behind Software Design Patterns was originally promoted by the book Design Patterns: Elements of Reusable Object-Oriented Software (This book is known as the Gang of Four book). To test this hypothesis, a real world example was sought for each of the 23 Gang of Four Patterns [13].