【图】一个FTP客户端的C#代码

using System;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;

namespace zhangyuk.net.csdn.blog.ftpclient
{
/// <summary
/// FTP Client
/// </summary
public class FTPClient
{
#region 构造函数
/// <summary
/// 缺省构造函数
/// </summary
public FTPClient()
{
   strRemoteHost = "";
   strRemotePath = "";
   strRemoteUser = "";
   strRemotePass = "";
   strRemotePort = 21;
   bConnected     = false;
}

（本文来源于图老师网站，更多请访问http://m.tulaoshi.com）

/// <summary
/// 构造函数
/// </summary
/// <param name="remoteHost"</param
/// <param name="remotePath"</param
/// <param name="remoteUser"</param
/// <param name="remotePass"</param
/// <param name="remotePort"</param
public FTPClient( string remoteHost, string remotePath, string remoteUser, string remotePass, int remotePort )
{
   strRemoteHost = remoteHost;
   strRemotePath = remotePath;
   strRemoteUser = remoteUser;
   strRemotePass = remotePass;
   strRemotePort = remotePort;
   Connect();
}
#endregion

#region 登陆
/// <summary
/// FTP服务器IP地址
/// </summary
private string strRemoteHost;
public string RemoteHost
{
   get
   {
    return strRemoteHost;
   }
   set
   {
    strRemoteHost = value;
   }
}
/// <summary
/// FTP服务器端口
/// </summary
private int strRemotePort;
public int RemotePort
{
   get
   {
    return strRemotePort;
   }
   set
   {
    strRemotePort = value;
   }
}
/// <summary
/// 当前服务器目录
/// </summary
private string strRemotePath;
public string RemotePath
{
   get
   {
    return strRemotePath;
   }
   set
   {
    strRemotePath = value;
   }
}
/// <summary
/// 登录用户账号
/// </summary
private string strRemoteUser;
public string RemoteUser
{
   set
   {
    strRemoteUser = value;
   }
}
/// <summary
/// 用户登录密码
/// </summary
private string strRemotePass;
public string RemotePass
{
   set
   {
    strRemotePass = value;
   }
}

（本文来源于图老师网站，更多请访问http://m.tulaoshi.com）

/// <summary
/// 是否登录
/// </summary
private Boolean bConnected;
public bool Connected
{
   get
   {
    return bConnected;
   }
}
#endregion

#region 链接
/// <summary
/// 建立连接
/// </summary
public void Connect()
{
   socketControl = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
   IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort);
   // 链接
   try
   {
    socketControl.Connect(ep);