实习时完成的C#社区管理系统，仿照QQ采用动态链接库方式编程，每个模块都用用户自定义控件实现，结构新颖，内附需求说明。-Internship to complete the C# Community management system, modeled on the use of dynamic-link library QQ mode programming, each module with a user custom control realize, novel structure, co