用于sd卡驱动及其文件的跨设备拷贝，基于znfat的文件系统，简化对sd卡的操作，简便易懂，新手易上手。-Sd card driver files for inter-device and copy the file system based znfat to simplify the operation of the sd card, easy to understand, novice approachable.

一个c sharp写的文件系统过滤驱动demo-C sharp writing a file system filter driver demo