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[Time of Publication] January 4, 2016Soon I saw Li Jianzhong's C # Object-Oriented Design Pattern Lecture on MSDN's Webcast. A very good series of lectures gave me a new understanding of design patterns. I realized that learning design patterns, specifically learning object-oriented design patterns, should start with learning object-oriented. "The principle of object-oriented is like understanding the rules of chess, and the design pattern is equivalent to a mess. I don't know what the rules look at." Since I have been doing ASP.NET development for the previous year, although I have been writing classes, learning Duwamish to make hierarchical architecture, typed DataSet and custom entity classes, it seems that I haven't used interfaces much in the past year, and I seldom use any polymorphism. In fact, the understanding of object-oriented programming is still very vague.影厅里，已经有剁手党忍不住喊起来了，这么好的东西，怎么能错过，哪怕日后没钱需要剁手也在所不惜。该剧讲述了一位“法律上已宣布死亡”的前CIA特工，受雇于一位神秘的亿万富翁，打自主正义牌，用私人力量来打击犯罪保护人民。How to Learn Design Patterns　 电影讲述了明朝南安太守杜宝之女杜丽娘游走后花园，梦到有一位年轻书生手持半枝垂柳前来求爱,两人在牡丹亭幽会，并在梦中相爱。于此同时书生柳梦梅也梦见在一座花园的梅树下立着一位佳人,说同他有姻缘之份,从此踏上了寻梦之路。