CSharp - An Introduction to Design Patterns

Introduction

A design pattern is a general reusable solution for commonly occurring problems.

Design Patterns is to make a template of how to solve a problem that can be used in many different situations.

Creational patterns abstract the instantiation process. The following five patterns are in this category.

Singleton pattern
Prototype pattern
Factory Method pattern
Builder pattern
Abstract Factory pattern

Structural patterns focus on how classes and objects can be composed to form relatively large structures. The following seven patterns fall into this category.

Proxy pattern
Flyweight pattern
Composite pattern
Bridge pattern
Facade pattern
Decorator pattern
Adapter pattern

Behavioral patterns is about algorithms and the assignment of responsibilities among objects. The following eleven patterns fall into this category.

Observer pattern
Strategy pattern
Template method pattern
Command pattern
Iterator pattern
Memento pattern
State pattern
Mediator pattern
Chain of responsibility pattern
Visitor pattern
Interpreter pattern