FTP服务器C#

用VS编写的FTP服务器软件，C#网络程序编程学习用。代码：usingSystem;usingSystem.Collections.Generic;usingSystem.Globalization;usingSystem.IO;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Threading;usingSystem.Windows.Forms;namespaceFtpServer{publicpartialclassFtpServerForm:Form{TcpListenermyTcpListener=nu