Design Patterns Groups

Twenty-three design patterns are featured in the GoF design patterns book, falling within one of three subgroups: Creational, Structural, or Behavioral. This section will take a quick look at each group and the patterns within. Throughout this book, you will examine the patterns that are useful for ASP.NET development.

• Creational

Creational patterns deal with object construction and referencing. They abstract away the responsibility of instantiating instances of objects from the client, thus keeping code loosely coupled and the responsibility of creating complex objects in one place adhering to the Single Responsibility and Separation of Concerns principles.

Following are the patterns in the Creational group:


• Abstract Factory
• Factory
• Builder
• Prototype
• Singleton

• Structural

Structural patterns deal with the composition and relationships of objects to fulfill the needs of larger systems.

Structural patterns deal with the composition and relationships of objects to fulfill the needs of larger systems.
• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy

• Behavioral

Behavioral patterns deal with the communication between objects in terms of responsibility and algorithms. The patterns in this group encapsulate complex behavior and abstract it away from the flow of control of a system, thus enabling complex systems to be easily understood and maintained.

Following are the patterns in the Behavioral group:


• Chain of Responsibility
• Command
• Interpreter
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

You may want to see How to choose and apply a Design Pattern