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

调用示例:

//调用开始:
   FTPClient FtpNiuGames=new FTPClient();   
   FtpNiuGames.RemoteHost=textBox3.Text;
   FtpNiuGames.RemoteUser=textBox5.Text;
   FtpNiuGames.RemotePass=textBox6.Text;
   FtpNiuGames.RemotePath=txtFtpDir.Text;;
   FtpNiuGames.RemotePort=int.Parse(textBox7.Text);   
   FtpNiuGames.Connect();
   textBox8.Text="成功打开FTP连接";
   //FtpNiuGames.Get("SHNiugames.mdb","c:\\");
   FtpNiuGames.Get(strFtpFile,strLocalDir);
   textBox8.Text=textBox8.Text + "\r\nFTP文件:"+strFtpDir+"文件到本地:" +strLocalFilePath+ "完成";
   FtpNiuGames.DisConnect();
   textBox8.Text=textBox8.Text + "\r\n成功关闭FTP连接";

//调用完成

 /// <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;
  }

  /// <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;
  &nbs