Brief Note on Design Pattern This note is based on the well-known book “Design Patterns – Elements of Reusable Object-Oriented Software” by Erich Gamma et., al.,.

《C#设计模式》。亚历山大的建筑模式、Gamma等人（1995）创作的"Design Patterns: Elements of Reusable Software"。这本书通常被称作"Gang of Four"或"GoF"，开创性的创造了《设计模式》。-" C# Design Patterns." Alexander' s architectural patterns, Gamma et al (1995) Creation of " Design Patter