Recommend a good book on Design Patterns

I sold a copy of ". NET and design patterns" a few days ago, and I thought it was quite good. This book uses a large number of practical applications to describe the application of design patterns in actual development.

I have also bought the book "C # Design Pattern". I have read it twice and I don't feel much gains. The main reason is that the example in the book "C # Design Pattern" is too far different from the actual one. It can only tell us what the design pattern is and what it can do, as to when to use the design model, we need to understand it. The application of a proper design model in a suitable place is precisely the essence of the design model. It cannot be done without years of practical project experience. 《. Net and design pattern. Every time we explain a pattern, we need to give a practical case. from analysis to implementation, it is natural to use the design pattern, it is never intended to use the design mode. The first article in this book introduces the design pattern in dotnetnuke (I bought it at the beginning, and I found that this book is still useful after reading it) open source applications such as nunit, ndoc, and gentle further explain how to use the appropriate application design pattern through examples.

From my two experiences of studying design patterns, the design patterns come from practice. Therefore, it is absolutely hard to learn the design patterns only in books. The most important thing to learn about the design pattern is to understand the essence of the Design Pattern in practice, to understand the advantages of the application pattern, and gradually make the use pattern a natural one. Let's take a closer look at the last sentence of this book:

Unintentional, saving of the Tao