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Soon 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.　　鞠县长的亲弟弟二团参谋长少剑波带兵火速援救夹皮沟，可土匪已逃之夭夭。李敬文和泥鳅见小葱说话爽脆，神情娇俏动人，愣是让霸王赵锋都拿她没主意，均觉得她风采出众，跟村里女娃大不相同最后佩内洛普又能否找到真爱，得到真爱之吻解除恶毒的魔咒呢？本剧设定基于史蒂文·索德伯格2009年执导的同名电影，聚焦于摩登应召女郎的生活。我就说，我在人前当然不会爬树骑牛了，是在自己家园子里才这样的。Basically, made up