It has been a few years for a few years, but I feel that I have a slow performance. The following aspects: I, the code reuse is low, the code written by the project is not available in another project: Try to study code standardization, It is designed to consider the expansion and flexibility and reuse. The code write speed is very low, and the performance is very unfamiliar with many basic class libraries. Help documents and code prompts dependent solutions: familiar with common class libraries, Mastering the common class library to get from the IDE environment does not depend on the code prompts, ignore the foundation