treeview控件与数据库连接、操作实例，具体修改、添加、删除节点的功能，可供学习。-treeview control with the database connection, the operation instance, specific changes, add, delete node function, available for study.

诗词管理系统源码采用三层架构使用了提供者设计模式,ObjectDatasource的使用,使用缓存依赖注入实现了WEBCONFIG自定义节点的配置，这是初学者很好的学习资料。-Poetry management system source used to provide three-tier design pattern, ObjectDatasource use, the use of cache dependency injection to achieve a WEBCONFIG cust