用要进行“网络硬盘”功能设计，首先要熟悉.NET中处理文件和文件夹的操作。File类和Directory类是其中最主要的两个类。了解它们将对后面功能的实现提供很大的便利。 -used to "network drives" functional design, the first to know.NET handle files and folders operation. File and Directory category is the largest of these two categories. To understand their function will be behind the realization of a great convenience.