用C#写的一个检测USB设备添加与移除的示例。,Using C# to write a USB device to add detection and removal of the sample.

基于vb6.0写的一个通过usb口读写卡的程序，并可以生成usb文件，分享给需要的朋友。-Based on the program the VB6.0 write a card through the USB port to read and write, and can generate usb file sharing to friends in need.