ftp包装类，c++写的。已经在正式库生产环境使用过半年，基本没问题,ftp wrapper class, c++ written. Has been the production environment in the official database used for half a year, the basic no problem

这是一个C#实现的FTP客户端的类库文件的实现方法，内附测试程序。-This is a C# implementation of the FTP client library file implementations, enclosing the test program.