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Design Pattern in .NET 101 – Abstract Factory Pattern (Creational Pattern) »

Download Sample Code Abstract Factory pattern provides an interface for creating families of related or dependent objects without specifying their concrete classes. E.g. I have a DocumentFactory class that either returns DefaultDocumentFactory or CustomDocumentFactory dependening on the environment variable. using System; using System.Collections.Generic; using System.Text; namespace AbstractFactory { abstract class DocumentFactory { public static DocumentFactory [...]

Design Pattern in .NET 101 – Factory Method Pattern (Creational Pattern) »

Download Sample Code Factory Method Pattern defines an interface for creating an object, but let subclasses decide which class to instantiate. It lets a class defer instantiation to subclasses. E.g., I defined a abstract News class. using System; using System.Collections.Generic; using System.Text; namespace FactoryPattern { abstract class News { } } Different kinds of news [...]