SOLID：C#中的开放-封闭原则
Introduction It says, "Software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification." This means that we should be able to add new functionality...
软件实体应遵循开放-封闭原则（OCP），即“开放扩展，封闭修改”，以提高代码的可维护性和适应性。通过接口和多态性，可以在不修改现有代码的情况下添加新功能，从而减少错误并简化测试。
