C# FTP操作代码实现(支持中文)

最新推荐文章于 2025-10-25 15:03:43 发布
原创 最新推荐文章于 2025-10-25 15:03:43 发布 · 2.7k 阅读 · 14 ·
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本文详细介绍了一个FTP操作类的实现，包括文件上传、下载、修改、删除等核心功能，并展示了如何通过该类与FTP服务器交互，适用于各种需要FTP文件管理的场景。 
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;

namespace WindowsFormsApp1
{
    /// <summary>  
    /// FTP操作类  
    /// </summary>  
    public class FTPOperater
    {
        #region 属性
        private FTPClient ftp;
        /// <summary>  
        /// 全局FTP访问变量  
        /// </summary>  
        public FTPClient Ftp
        {
            get { return ftp; }
            set { ftp = value; }
        }

        private string _server;
        /// <summary>  
        /// Ftp服务器  
        /// </summary>  
        public string Server
        {
            get { return _server; }
            set { _server = value; }
        }

        private string _User;
        /// <summary>  
        /// Ftp用户  
        /// </summary>  
        public string User
        {
            get { return _User; }
            set { _User = value; }
        }

        private string _Pass;
        /// <summary>  
        /// Ftp密码  
        /// </summary>  
        public string Pass
        {
            get { return _Pass; }
            set { _Pass = value; }
        }

        private string _FolderZJ;
        /// <summary>  
        /// Ftp密码  
        /// </summary>  
        public string FolderZJ
        {
            get { return _FolderZJ; }
            set { _FolderZJ = value; }
        }

        private string _FolderWX;
        /// <summary>  
        /// Ftp密码  
        /// </summary>  
        public string FolderWX
        {
            get { return _FolderWX; }
            set { _FolderWX = value; }
        }
        #endregion

        private int port;

        public int Port
        {
            get { return port; }
            set { port = value; }
        }


        /// <summary>  
        /// 得到文件列表  
        /// </summary>  
        /// <returns></returns>  
        public string[] GetList(string strPath)
        {
            if (ftp == null) ftp = this.getFtpClient();
            ftp.Connect();
            ftp.ChDir(strPath);
            return ftp.Dir("*");
        }

        /// <summary>  
        /// 下载文件  
        /// </summary>  
        /// <param name="ftpFolder">ftp目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        /// <param name="localFolder">本地目录</param>  
        /// <param name="localFileName">本地文件名</param>  
        public bool GetFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName)
        {
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                ftp.Get(ftpFileName, localFolder, localFileName);

                return true;
            }
            catch
            {
                try
                {
                    ftp.DisConnect();
                    ftp = null;
                }
                catch { ftp = null; }
                return false;
            }
        }

        /// <summary>  
        /// 修改文件  
        /// </summary>  
        /// <param name="ftpFolder">本地目录</param>  
        /// <param name="ftpFileName">本地文件名temp</param>  
        /// <param name="localFolder">本地目录</param>  
        /// <param name="localFileName">本地文件名</param>  
        public bool AddMSCFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName, string BscInfo)
        {
            string sLine = "";
            string sResult = "";
            string path = "获得应用程序所在的完整的路径";
            path = path.Substring(0, path.LastIndexOf("\\"));
            try
            {
                FileStream fsFile = new FileStream(ftpFolder + "\\" + ftpFileName, FileMode.Open);
                FileStream fsFileWrite = new FileStream(localFolder + "\\" + localFileName, FileMode.Create);
                StreamReader sr = new StreamReader(fsFile);
                StreamWriter sw = new StreamWriter(fsFileWrite);
                sr.BaseStream.Seek(0, SeekOrigin.Begin);
                while (sr.Peek() > -1)
                {
                    sLine = sr.ReadToEnd();
                }
                string[] arStr = sLine.Split(new string[] { "\n" }, StringSplitOptions.RemoveEmptyEntries);

                for (int i = 0; i < arStr.Length - 1; i++)
                {
                    sResult += BscInfo + "," + arStr[i].Trim() + "\n";
                }
                sr.Close();
                byte[] connect = new UTF8Encoding(true).GetBytes(sResult);
                fsFileWrite.Write(connect, 0, connect.Length);
                fsFileWrite.Flush();
                sw.Close();
                fsFile.Close();
                fsFileWrite.Close();
                return true;
            }
            catch (Exception e)
            {
                return false;
            }
        }

        /// <summary>  
        /// 删除文件  
        /// </summary>  
        /// <param name="ftpFolder">ftp目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        public bool DelFile(string ftpFolder, string ftpFileName)
        {
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                ftp.Delete(ftpFileName);
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>  
        /// 上传文件  
        /// </summary>  
        /// <param name="ftpFolder">ftp目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        public bool PutFile(string ftpFolder, string ftpFileName)
        {
            var i = 0;
            try
            {
               
                if (ftp == null) ftp = this.getFtpClient();
                ftp.DisConnect();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                ftp.Put(ftpFileName);
                return true;
            }
            catch
            {
                return false;
            }
            
        }

        /// <summary>  
        /// 下载文件  
        /// </summary>  
        /// <param name="ftpFolder">ftp目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        /// <param name="localFolder">本地目录</param>  
        /// <param name="localFileName">本地文件名</param>  
        public bool GetFileNoBinary(string ftpFolder, string ftpFileName, string localFolder, string localFileName)
        {
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                ftp.GetNoBinary(ftpFileName, localFolder, localFileName);
                return true;
            }
            catch
            {
                try
                {
                    ftp.DisConnect();
                    ftp = null;
                }
                catch
                {
                    ftp = null;
                }
                return false;
            }
        }

        /// <summary>  
        /// 得到FTP上文件信息  
        /// </summary>  
        /// <param name="ftpFolder">FTP目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        public string GetFileInfo(string ftpFolder, string ftpFileName)
        {
            string strResult = "";
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (ftp.Connected) ftp.DisConnect();
                ftp.Connect();
                ftp.ChDir(ftpFolder);
                strResult = ftp.GetFileInfo(ftpFileName);
                return strResult;
            }
            catch
            {
                return "";
            }
        }

        /// <summary>  
        /// 测试FTP服务器是否可登陆  
        /// </summary>  
        public bool CanConnect()
        {
            if (ftp == null) ftp = this.getFtpClient();
            try
            {
                ftp.Connect();
                ftp.DisConnect();
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>  
        /// 得到FTP上文件信息  
        /// </summary>  
        /// <param name="ftpFolder">FTP目录</param>  
        /// <param name="ftpFileName">ftp文件名</param>  
        public string GetFileInfoConnected(string ftpFolder, string ftpFileName)
        {
            string strResult = "";
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                strResult = ftp.GetFileInfo(ftpFileName);
                return strResult;
            }
            catch
            {
                return "";
            }
        }

        /// <summary>  
        /// 得到文件列表  
        /// </summary>  
        /// <param name="ftpFolder">FTP目录</param>  
        /// <returns>FTP通配符号</returns>  
        public string[] GetFileList(string ftpFolder, string strMask)
        {
            string[] strResult;
            try
            {
                if (ftp == null) ftp = this.getFtpClient();
                if (!ftp.Connected)
                {
                    ftp.Connect();
                    ftp.ChDir(ftpFolder);
                }
                strResult = ftp.Dir(strMask);
                return strResult;
            }
            catch
            {
                return null;
            }
        }

        /// <summary>  
        ///得到FTP传输对象  
        /// </summary>  
        public FTPClient getFtpClient()
        {
            FTPClient ft = new FTPClient();
            ft.RemoteHost = this.Server;
            ft.RemoteUser = this.User;
            ft.RemotePass = this.Pass;
            ft.RemotePort = this.port;
            return ft;
        }
    }  
}
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

namespace WindowsFormsApp1
{
    /// <summary>  
    /// FTP 操作类客户端  
    /// </summary>  
    public class FTPClient
    {
        public static object obj = new object();

        #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>  
        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 字段
        private int strRemotePort;
        private Boolean bConnected;
        private string strRemoteHost;
        private string strRemotePass;
        private string strRemoteUser;
        private string strRemotePath;

        /// <summary>  
        /// 服务器返回的应答信息(包含应答码)  
        /// </summary>  
        private string strMsg;
        /// <summary>  
        /// 服务器返回的应答信息(包含应答码)  
        /// </summary>  
        private string strReply;
        /// <summary>  
        /// 服务器返回的应答码  
        /// </summary>  
        private int iReplyCode;
        /// <summary>  
        /// 进行控制连接的socket  
        /// </summary>  
        private Socket socketControl;
        /// <summary>  
        /// 传输模式  
        /// </summary>  
        private TransferType trType;
        /// <summary>  
        /// 接收和发送数据的缓冲区  
        /// </summary>  
        private static int BLOCK_SIZE = 512;
        /// <summary>  
        /// 编码方式  
        /// </summary>  
        Encoding ASCII = Encoding.ASCII;
        /// <summary>  
        /// 字节数组  
        /// </summary>  
        Byte[] buffer = new Byte[BLOCK_SIZE];
        #endregion

        #region 属性
        /// <summary>  
        /// FTP服务器IP地址  
        /// </summary>  
        public string RemoteHost
        {
            get
            {
                return strRemoteHost;
            }
            set
            {
                strRemoteHost = value;
            }
        }

        /// <summary>  
        /// FTP服务器端口  
        /// </summary>  
        public int RemotePort
        {
            get
            {
                return strRemotePort;
            }
            set
            {
                strRemotePort = value;
            }
        }

        /// <summary>  
        /// 当前服务器目录  
        /// </summary>  
        public string RemotePath
        {
            get
            {
                return strRemotePath;
            }
            set
            {
                strRemotePath = value;
            }
        }

        /// <summary>  
        /// 登录用户账号  
        /// </summary>  
        public string RemoteUser
        {
            set
            {
                strRemoteUser = value;
            }
        }

        /// <summary>  
        /// 用户登录密码  
        /// </summary>  
        public string RemotePass
        {
            set
            {
                strRemotePass = value;
            }
        }

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

        #region 链接
        /// <summary>  
        /// 建立连接   
        /// </summary>  
        public void Connect()
        {
            try
            {
                lock (obj)
                {
                    socketControl = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort);
                    try
                    {
                        socketControl.Connect(ep);
                    }
                    catch (Exception)
                    {
                        CloseSocketConnect();
                    }
                }
                ReadReply();
                if (iReplyCode != 220)
                {
                    DisConnect();
                    throw new IOException(strReply.Substring(4));
                }
                SendCommand("USER " + strRemoteUser);
                if (!(iReplyCode == 331 || iReplyCode == 230))
                {
                    CloseSocketConnect();
                    throw new IOException(strReply.Substring(4));
                }
                if (iReplyCode != 230)
                {
                    SendCommand("PASS " + strRemotePass);
                    if (!(iReplyCode == 230 || iReplyCode == 202))
                    {
                        CloseSocketConnect();
                        throw new IOException(strReply.Substring(4));
                    }
                }
                bConnected = true;
                ChDir(strRemotePath);
            }
            catch (Exception)
            {

                CloseSocketConnect();
            }
           
        }

        /// <summary>  
        /// 关闭连接  
        /// </summary>  
        public void DisConnect()
        {
            if (socketControl != null)
            {
                SendCommand("QUIT");
            }
            CloseSocketConnect();
        }
        #endregion

        #region 传输模式
        /// <summary>  
        /// 传输模式:二进制类型、ASCII类型  
        /// </summary>  
        public enum TransferType { Binary, ASCII };

        /// <summary>  
        /// 设置传输模式  
        /// </summary>  
        /// <param name="ttType">传输模式</param>  
        public void SetTransferType(TransferType ttType)
        {
            if (ttType == TransferType.Binary)
            {
                SendCommand("TYPE I");//binary类型传输  
            }
            else
            {
                SendCommand("TYPE A");//ASCII类型传输  
            }
            if (iReplyCode != 200)
            {
                throw new IOException(strReply.Substring(4));
            }
            else
            {
                trType = ttType;
            }
        }

        /// <summary>  
        /// 获得传输模式  
        /// </summary>  
        /// <returns>传输模式</returns>  
        public TransferType GetTransferType()
        {
            return trType;
        }
        #endregion

        #region 文件操作
        /// <summary>  
        /// 获得文件列表  
        /// </summary>  
        /// <param name="strMask">文件名的匹配字符串</param>  
        public string[] Dir(string strMask)
        {
            if (!bConnected)
            {
                Connect();
            }
            Socket socketData = CreateDataSocket();
            SendCommand("NLST " + strMask);
            if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226))
            {
                throw new IOException(strReply.Substring(4));
            }
            strMsg = "";
            Thread.Sleep(2000);
            while (true)
            {
                int iBytes = socketData.Receive(buffer, buffer.Length, 0);
                strMsg += ASCII.GetString(buffer, 0, iBytes);
                if (iBytes < buffer.Length)
                {
                    break;
                }
            }
            char[] seperator = { '\n' };
            string[] strsFileList = strMsg.Split(seperator);
            socketData.Close(); //数据socket关闭时也会有返回码  
            if (iReplyCode != 226)
            {
                ReadReply();
                if (iReplyCode != 226)
                {

                    throw new IOException(strReply.Substring(4));
                }
            }
            return strsFileList;
        }

        public void newPutByGuid(string strFileName, string strGuid)
        {
            if (!bConnected)
            {
                Connect();
            }
            string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
            string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
            strGuid = str + "\\" + strGuid;
            Socket socketData = CreateDataSocket();
            SendCommand("STOR " + Path.GetFileName(strGuid));
            if (!(iReplyCode == 125 || iReplyCode == 150))
            {
                throw new IOException(strReply.Substring(4));
            }
            FileStream input = new FileStream(strGuid, FileMode.Open);
            input.Flush();
            int iBytes = 0;
            while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
            {
                socketData.Send(buffer, iBytes, 0);
            }
            input.Close();
            if (socketData.Connected)
            {
                socketData.Close();
            }
            if (!(iReplyCode == 226 || iReplyCode == 250))
            {
                ReadReply();
                if (!(iReplyCode == 226 || iReplyCode == 250))
                {
                    throw new IOException(strReply.Substring(4));
                }
            }
        }

        /// <summary>  
        /// 获取文件大小  
        /// </summary>  
        /// <param name="strFileName">文件名</param>  
        /// <returns>文件大小</returns>  
        public long GetFileSize(string strFileName)
        {
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("SIZE " + Path.GetFileName(strFileName));
            long lSize = 0;
            if (iReplyCode == 213)
            {
                lSize = Int64.Parse(strReply.Substring(4));
            }
            else
            {
                throw new IOException(strReply.Substring(4));
            }
            return lSize;
        }


        /// <summary>  
        /// 获取文件信息  
        /// </summary>  
        /// <param name="strFileName">文件名</param>  
        /// <returns>文件大小</returns>  
        public string GetFileInfo(string strFileName)
        {
            if (!bConnected)
            {
                Connect();
            }
            Socket socketData = CreateDataSocket();
            SendCommand("LIST " + strFileName);
            string strResult = "";
            if (!(iReplyCode == 150 || iReplyCode == 125
                || iReplyCode == 226 || iReplyCode == 250))
            {
                throw new IOException(strReply.Substring(4));
            }
            byte[] b = new byte[512];
            MemoryStream ms = new MemoryStream();

            while (true)
            {
                int iBytes = socketData.Receive(b, b.Length, 0);
                ms.Write(b, 0, iBytes);
                if (iBytes <= 0)
                {

                    break;
                }
            }
            byte[] bt = ms.GetBuffer();
            strResult = System.Text.Encoding.ASCII.GetString(bt);
            ms.Close();
            return strResult;
        }

        /// <summary>  
        /// 删除  
        /// </summary>  
        /// <param name="strFileName">待删除文件名</param>  
        public void Delete(string strFileName)
        {
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("DELE " + strFileName);
            if (iReplyCode != 250)
            {
                throw new IOException(strReply.Substring(4));
            }
        }

        /// <summary>  
        /// 重命名(如果新文件名与已有文件重名,将覆盖已有文件)  
        /// </summary>  
        /// <param name="strOldFileName">旧文件名</param>  
        /// <param name="strNewFileName">新文件名</param>  
        public void Rename(string strOldFileName, string strNewFileName)
        {
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("RNFR " + strOldFileName);
            if (iReplyCode != 350)
            {
                throw new IOException(strReply.Substring(4));
            }
            //  如果新文件名与原有文件重名,将覆盖原有文件  
            SendCommand("RNTO " + strNewFileName);
            if (iReplyCode != 250)
            {
                throw new IOException(strReply.Substring(4));
            }
        }
        #endregion

        #region 上传和下载
        /// <summary>  
        /// 下载一批文件  
        /// </summary>  
        /// <param name="strFileNameMask">文件名的匹配字符串</param>  
        /// <param name="strFolder">本地目录(不得以\结束)</param>  
        public void Get(string strFileNameMask, string strFolder)
        {
            if (!bConnected)
            {
                Connect();
            }
            string[] strFiles = Dir(strFileNameMask);
            foreach (string strFile in strFiles)
            {
                if (!strFile.Equals(""))//一般来说strFiles的最后一个元素可能是空字符串  
                {
                    Get(strFile, strFolder, strFile);
                }
            }
        }

        /// <summary>  
        /// 下载一个文件  
        /// </summary>  
        /// <param name="strRemoteFileName">要下载的文件名</param>  
        /// <param name="strFolder">本地目录(不得以\结束)</param>  
        /// <param name="strLocalFileName">保存在本地时的文件名</param>  
        public void Get(string strRemoteFileName, string strFolder, string strLocalFileName)
        {
            Socket socketData = CreateDataSocket();
            try
            {
                if (!bConnected)
                {
                    Connect();
                }
                SetTransferType(TransferType.Binary);
                if (strLocalFileName.Equals(""))
                {
                    strLocalFileName = strRemoteFileName;
                }
                SendCommand("RETR " + strRemoteFileName);
                if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
                {
                    throw new IOException(strReply.Substring(4));
                }
                FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
                while (true)
                {
                    int iBytes = socketData.Receive(buffer, buffer.Length, 0);
                    output.Write(buffer, 0, iBytes);
                    if (iBytes <= 0)
                    {
                        break;
                    }
                }
                output.Close();
                if (socketData.Connected)
                {
                    socketData.Close();
                }
                if (!(iReplyCode == 226 || iReplyCode == 250))
                {
                    ReadReply();
                    if (!(iReplyCode == 226 || iReplyCode == 250))
                    {
                        throw new IOException(strReply.Substring(4));
                    }
                }
            }
            catch
            {
                socketData.Close();
                socketData = null;
                socketControl.Close();
                bConnected = false;
                socketControl = null;
            }
        }

        /// <summary>  
        /// 下载一个文件  
        /// </summary>  
        /// <param name="strRemoteFileName">要下载的文件名</param>  
        /// <param name="strFolder">本地目录(不得以\结束)</param>  
        /// <param name="strLocalFileName">保存在本地时的文件名</param>  
        public void GetNoBinary(string strRemoteFileName, string strFolder, string strLocalFileName)
        {
            if (!bConnected)
            {
                Connect();
            }

            if (strLocalFileName.Equals(""))
            {
                strLocalFileName = strRemoteFileName;
            }
            Socket socketData = CreateDataSocket();
            SendCommand("RETR " + strRemoteFileName);
            if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
            {
                throw new IOException(strReply.Substring(4));
            }
            FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
            while (true)
            {
                int iBytes = socketData.Receive(buffer, buffer.Length, 0);
                output.Write(buffer, 0, iBytes);
                if (iBytes <= 0)
                {
                    break;
                }
            }
            output.Close();
            if (socketData.Connected)
            {
                socketData.Close();
            }
            if (!(iReplyCode == 226 || iReplyCode == 250))
            {
                ReadReply();
                if (!(iReplyCode == 226 || iReplyCode == 250))
                {
                    throw new IOException(strReply.Substring(4));
                }
            }
        }

        /// <summary>  
        /// 上传一批文件  
        /// </summary>  
        /// <param name="strFolder">本地目录(不得以\结束)</param>  
        /// <param name="strFileNameMask">文件名匹配字符(可以包含*和?)</param>  
        public void Put(string strFolder, string strFileNameMask)
        {
            string[] strFiles = Directory.GetFiles(strFolder, strFileNameMask);
            foreach (string strFile in strFiles)
            {
                Put(strFile);
            }
        }

        /// <summary>  
        /// 上传一个文件  
        /// </summary>  
        /// <param name="strFileName">本地文件名</param>  
        public void Put(string strFileName)
        {
            if (!bConnected)
            {
                Connect();
            }
            Socket socketData = CreateDataSocket();
            if (Path.GetExtension(strFileName) == "")
                SendCommand("STOR " + Path.GetFileNameWithoutExtension(strFileName));
            else
                SendCommand("STOR " + Path.GetFileName(strFileName));

            if (!(iReplyCode == 125 || iReplyCode == 150))
            {
                throw new IOException(strReply.Substring(4));
            }

            FileStream input = new FileStream(strFileName, FileMode.Open);
            int iBytes = 0;
            while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
            {
                socketData.Send(buffer, iBytes, 0);
            }
            input.Close();
            if (socketData.Connected)
            {
                socketData.Close();
            }
            if (!(iReplyCode == 226 || iReplyCode == 250))
            {
                ReadReply();
                if (!(iReplyCode == 226 || iReplyCode == 250))
                {
                    throw new IOException(strReply.Substring(4));
                }
            }
        }


        /// <summary>  
        /// 上传一个文件  
        /// </summary>  
        /// <param name="strFileName">本地文件名</param>  
        public void PutByGuid(string strFileName, string strGuid)
        {
            if (!bConnected)
            {
                Connect();
            }
            string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
            string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
            strGuid = str + "\\" + strGuid;
            System.IO.File.Copy(strFileName, strGuid);
            System.IO.File.SetAttributes(strGuid, System.IO.FileAttributes.Normal);
            Socket socketData = CreateDataSocket();
            SendCommand("STOR " + Path.GetFileName(strGuid));
            if (!(iReplyCode == 125 || iReplyCode == 150))
            {
                throw new IOException(strReply.Substring(4));
            }
            FileStream input = new FileStream(strGuid, FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
            int iBytes = 0;
            while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
            {
                socketData.Send(buffer, iBytes, 0);
            }
            input.Close();
            File.Delete(strGuid);
            if (socketData.Connected)
            {
                socketData.Close();
            }
            if (!(iReplyCode == 226 || iReplyCode == 250))
            {
                ReadReply();
                if (!(iReplyCode == 226 || iReplyCode == 250))
                {
                    throw new IOException(strReply.Substring(4));
                }
            }
        }
        #endregion

        #region 目录操作
        /// <summary>  
        /// 创建目录  
        /// </summary>  
        /// <param name="strDirName">目录名</param>  
        public void MkDir(string strDirName)
        {
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("MKD " + strDirName);
            if (iReplyCode != 257)
            {
                throw new IOException(strReply.Substring(4));
            }
        }

        /// <summary>  
        /// 删除目录  
        /// </summary>  
        /// <param name="strDirName">目录名</param>  
        public void RmDir(string strDirName)
        {
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("RMD " + strDirName);
            if (iReplyCode != 250)
            {
                throw new IOException(strReply.Substring(4));
            }
        }

        /// <summary>  
        /// 改变目录  
        /// </summary>  
        /// <param name="strDirName">新的工作目录名</param>  
        public void ChDir(string strDirName)
        {
            if (strDirName.Equals(".") || strDirName.Equals(""))
            {
                return;
            }
            if (!bConnected)
            {
                Connect();
            }
            SendCommand("CWD " + strDirName);
            if (iReplyCode != 250)
            {
                throw new IOException(strReply.Substring(4));
            }
            this.strRemotePath = strDirName;
        }
        #endregion

        #region 内部函数
        /// <summary>  
        /// 将一行应答字符串记录在strReply和strMsg,应答码记录在iReplyCode  
        /// </summary>  
        private void ReadReply()
        {
            strMsg = "";
            strReply = ReadLine();
            iReplyCode = Int32.Parse(strReply.Substring(0, 3));
        }

        /// <summary>  
        /// 建立进行数据连接的socket  
        /// </summary>  
        /// <returns>数据连接socket</returns>  
        private Socket CreateDataSocket()
        {
            SendCommand("PASV");
            if (iReplyCode != 227)
            {
                throw new IOException(strReply.Substring(4));
            }
            int index1 = strReply.IndexOf('(');
            int index2 = strReply.IndexOf(')');
            string ipData = strReply.Substring(index1 + 1, index2 - index1 - 1);
            int[] parts = new int[6];
            int len = ipData.Length;
            int partCount = 0;
            string buf = "";
            for (int i = 0; i < len && partCount <= 6; i++)
            {
                char ch = Char.Parse(ipData.Substring(i, 1));
                if (Char.IsDigit(ch))
                    buf += ch;
                else if (ch != ',')
                {
                    throw new IOException("Malformed PASV strReply: " + strReply);
                }
                if (ch == ',' || i + 1 == len)
                {
                    try
                    {
                        parts[partCount++] = Int32.Parse(buf);
                        buf = "";
                    }
                    catch (Exception)
                    {
                        throw new IOException("Malformed PASV strReply: " + strReply);
                    }
                }
            }
            string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3];
            int port = (parts[4] << 8) + parts[5];
            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), port);
            try
            {
                s.Connect(ep);
            }
            catch (Exception)
            {
                throw new IOException("无法连接ftp服务器");
            }
            return s;
        }

        /// <summary>  
        /// 关闭socket连接(用于登录以前)  
        /// </summary>  
        private void CloseSocketConnect()
        {
            lock (obj)
            {
                if (socketControl != null)
                {
                    socketControl.Close();
                    socketControl = null;
                }
                bConnected = false;
            }
        }

        /// <summary>  
        /// 读取Socket返回的所有字符串  
        /// </summary>  
        /// <returns>包含应答码的字符串行</returns>  
        private string ReadLine()
        {
            lock (obj)
            {
                while (true)
                {
                    int iBytes = socketControl.Receive(buffer, buffer.Length, 0);
                    strMsg += ASCII.GetString(buffer, 0, iBytes);
                    if (iBytes < buffer.Length)
                    {
                        break;
                    }
                }
            }
            char[] seperator = { '\n' };
            string[] mess = strMsg.Split(seperator);
            if (strMsg.Length > 2)
            {
                strMsg = mess[mess.Length - 2];
            }
            else
            {
                strMsg = mess[0];
            }
            if (!strMsg.Substring(3, 1).Equals(" ")) //返回字符串正确的是以应答码(如220开头,后面接一空格,再接问候字符串)  
            {
                return ReadLine();
            }
            return strMsg;
        }

        /// <summary>  
        /// 发送命令并获取应答码和最后一行应答字符串  
        /// </summary>  
        /// <param name="strCommand">命令</param>  
        public void SendCommand(String strCommand)
        {
            lock (obj)
            {
                //Byte[] cmdBytes = Encoding.ASCII.GetBytes((strCommand + "\r\n").ToCharArray());
                Byte[] cmdBytes = Encoding.Default.GetBytes((strCommand + "\r\n").ToCharArray());
                socketControl.Send(cmdBytes, cmdBytes.Length, 0);
                Thread.Sleep(1000);
                ReadReply();
            }
        }
        #endregion
    }  
}
            FTPOperater ftp = new FTPOperater();
            ftp.Server = "XX.XX.XX.XX";
            ftp.Port = ****;
            ftp.User = "****";
            ftp.Pass = "**********";
            
            bool pic = ftp.PutFile(@"/项目文件/", @"C:\Users\lmh\Desktop\淘宝技术这十年，完整最终确认版.pdf");
            if (pic)
            {
                MessageBox.Show("上传成功");
            }
            else
            {
                MessageBox.Show("上传失败");
            }

 

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