C#操作ftp类完整实例

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Globalization;
namespace FtpTest1
{
 public class FtpWeb
 {
 string ftpServerIP;
 string ftpRemotePath;
 string ftpUserID;
 string ftpPassword;
 string ftpURI;
 /// <summary>
 /// 连接FTP
 /// </summary>
 /// <param name="FtpServerIP">FTP连接地址</param>
 /// <param name="FtpRemotePath">指定FTP连接成功后的当前目录, 如果不指定即默认为根目录</param>
 /// <param name="FtpUserID">用户名</param>
 /// <param name="FtpPassword">密码</param>
 public FtpWeb(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
 {
  ftpServerIP = FtpServerIP;
  ftpRemotePath = FtpRemotePath;
  ftpUserID = FtpUserID;
  ftpPassword = FtpPassword;
  ftpURI = "ftp://" + ftpServerIP + "/" ;
 }
 static void Main() {
  //string file = "c:\\aq3.gifa";
  //FileInfo fileInf = new FileInfo(file);
  //if (!fileInf.Exists)
  //{
  // Console.WriteLine(file + " no exists");
  //}
  //else {
  // Console.WriteLine("yes");
  //}
  //Console.ReadLine();
  FtpWeb fw = new FtpWeb("121.11.65.10", "", "aa1", "aa");
  string[] filePaths = { "c:\\aq3.gif1", "c:\\aq2.gif1", "c:\\bsmain_runtime.log" };
  Console.WriteLine(fw.UploadFile(filePaths));
  Console.ReadLine();
 }
 //上传文件
 public string UploadFile( string[] filePaths ) {
  StringBuilder sb = new StringBuilder();
  if ( filePaths != null && filePaths.Length > 0 ){
  foreach( var file in filePaths ){
   sb.Append(Upload( file ));
  }
  }
  return sb.ToString();
 }
  /// <summary>
 /// 上传文件
 /// </summary>
 /// <param name="filename"></param>
 private string Upload(string filename)
 {
  FileInfo fileInf = new FileInfo(filename);
  if ( !fileInf.Exists ){
  return filename + " 不存在!\n";
  }
  string uri = ftpURI + fileInf.Name;
  FtpWebRequest reqFTP;
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  reqFTP.KeepAlive = false;
  reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
  reqFTP.UseBinary = true;
  reqFTP.UsePassive = false; //选择主动还是被动模式
  //Entering Passive Mode
  reqFTP.ContentLength = fileInf.Length;
  int buffLength = 2048;
  byte[] buff = new byte[buffLength];
  int contentLen;
  FileStream fs = fileInf.OpenRead();
  try
  {
  Stream strm = reqFTP.GetRequestStream();
  contentLen = fs.Read(buff, 0, buffLength);
  while (contentLen != 0)
  {
   strm.Write(buff, 0, contentLen);
   contentLen = fs.Read(buff, 0, buffLength);
  }
  strm.Close();
  fs.Close();
  }
  catch (Exception ex)
  {
  return "同步 "+filename+"时连接不上服务器!\n";
  //Insert_Standard_ErrorLog.Insert("FtpWeb", "Upload Error --> " + ex.Message);
  }
  return "";
 }
 /// <summary>
 /// 下载
 /// </summary>
 /// <param name="filePath"></param>
 /// <param name="fileName"></param>
 public void Download(string filePath, string fileName)
 {
  FtpWebRequest reqFTP;
  try
  {
  FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
  reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
  reqFTP.UseBinary = true;
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
  Stream ftpStream = response.GetResponseStream();
  long cl = response.ContentLength;
  int bufferSize = 2048;
  int readCount;
  byte[] buffer = new byte[bufferSize];
  readCount = ftpStream.Read(buffer, 0, bufferSize);
  while (readCount > 0)
  {
   outputStream.Write(buffer, 0, readCount);
   readCount = ftpStream.Read(buffer, 0, bufferSize);
  }
  ftpStream.Close();
  outputStream.Close();
  response.Close();
  }
  catch (Exception ex)
  {
  Insert_Standard_ErrorLog.Insert("FtpWeb", "Download Error --> " + ex.Message);
  }
 }
 /// <summary>
 /// 删除文件
 /// </summary>
 /// <param name="fileName"></param>
 public void Delete(string fileName)
 {
  try
  {
  string uri = ftpURI + fileName;
  FtpWebRequest reqFTP;
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  reqFTP.KeepAlive = false;
  reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
  string result = String.Empty;
  FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
  long size = response.ContentLength;
  Stream datastream = response.GetResponseStream();
  StreamReader sr = new StreamReader(datastream);
  result = sr.ReadToEnd();
  sr.Close();
  datastream.Close();
  response.Close();
  }
  catch (Exception ex)
  {
  Insert_Standard_ErrorLog.Insert("FtpWeb", "Delete Error --> " + ex.Message + " 文件名:" + fileName);
  }
 }
 /// <summary>
 /// 获取当前目录下明细(包含文件和文件夹)
 /// </summary>
 /// <returns></returns>
 public string[] GetFilesDetailList()
 {
  string[] downloadFiles;
  try
  {
  StringBuilder result = new StringBuilder();
  FtpWebRequest ftp;
  ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
  ftp.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
  WebResponse response = ftp.GetResponse();
  StreamReader reader = new StreamReader(response.GetResponseStream());
  string line = reader.ReadLine();
  line = reader.ReadLine();
  line = reader.ReadLine();
  while (line != null)
  {
   result.Append(line);
   result.Append("\n");
   line = reader.ReadLine();
  }
  result.Remove(result.ToString().LastIndexOf("\n"), 1);
  reader.Close();
  response.Close();
  return result.ToString().Split('\n');
  }
  catch (Exception ex)
  {
  downloadFiles = null;
  Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFilesDetailList Error --> " + ex.Message);
  return downloadFiles;
  }
 }
 /// <summary>
 /// 获取当前目录下文件列表(仅文件)
 /// </summary>
 /// <returns></returns>
 public string[] GetFileList(string mask)
 {
  string[] downloadFiles;
  StringBuilder result = new StringBuilder();
  FtpWebRequest reqFTP;
  try
  {
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
  reqFTP.UseBinary = true;
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
  WebResponse response = reqFTP.GetResponse();
  StreamReader reader = new StreamReader(response.GetResponseStream());
  string line = reader.ReadLine();
  while (line != null)
  {
   if (mask.Trim() != string.Empty && mask.Trim() != "*.*")
   {
   string mask_ = mask.Substring(0, mask.IndexOf("*"));
   if (line.Substring(0, mask_.Length) == mask_)
   {
    result.Append(line);
    result.Append("\n");
   }
   }
   else
   {
   result.Append(line);
   result.Append("\n");
   }
   line = reader.ReadLine();
  }
  result.Remove(result.ToString().LastIndexOf('\n'), 1);
  reader.Close();
  response.Close();
  return result.ToString().Split('\n');
  }
  catch (Exception ex)
  {
  downloadFiles = null;
  if (ex.Message.Trim() != "远程服务器返回错误: (550) 文件不可用(例如，未找到文件，无法访问文件)。")
  {
   Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileList Error --> " + ex.Message.ToString());
  }
  return downloadFiles;
  }
 }
 /// <summary>
 /// 获取当前目录下所有的文件夹列表(仅文件夹)
 /// </summary>
 /// <returns></returns>
 public string[] GetDirectoryList()
 {
  string[] drectory = GetFilesDetailList();
  string m = string.Empty;
  foreach (string str in drectory)
  {
  if (str.Trim().Substring(0, 1).ToUpper() == "D")
  {
   m += str.Substring(54).Trim() + "\n";
  }
  }
  char[] n = new char[] { '\n' };
  return m.Split(n);
 }
 /// <summary>
 /// 判断当前目录下指定的子目录是否存在
 /// </summary>
 /// <param name="RemoteDirectoryName">指定的目录名</param>
 public bool DirectoryExist(string RemoteDirectoryName)
 {
  string[] dirList = GetDirectoryList();
  foreach (string str in dirList)
  {
  if (str.Trim() == RemoteDirectoryName.Trim())
  {
   return true;
  }
  }
  return false;
 }
 /// <summary>
 /// 判断当前目录下指定的文件是否存在
 /// </summary>
 /// <param name="RemoteFileName">远程文件名</param>
 public bool FileExist(string RemoteFileName)
 {
  string[] fileList = GetFileList("*.*");
  foreach (string str in fileList)
  {
  if (str.Trim() == RemoteFileName.Trim())
  {
   return true;
  }
  }
  return false;
 }
 /// <summary>
 /// 创建文件夹
 /// </summary>
 /// <param name="dirName"></param>
 public void MakeDir(string dirName)
 {
  FtpWebRequest reqFTP;
  try
  {
  // dirName = name of the directory to create.
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName));
  reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
  reqFTP.UseBinary = true;
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
  Stream ftpStream = response.GetResponseStream();
  ftpStream.Close();
  response.Close();
  }
  catch (Exception ex)
  {
  Insert_Standard_ErrorLog.Insert("FtpWeb", "MakeDir Error --> " + ex.Message);
  }
 }
 /// <summary>
 /// 获取指定文件大小
 /// </summary>
 /// <param name="filename"></param>
 /// <returns></returns>
 public long GetFileSize(string filename)
 {
  FtpWebRequest reqFTP;
  long fileSize = 0;
  try
  {
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + filename));
  reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
  reqFTP.UseBinary = true;
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
  Stream ftpStream = response.GetResponseStream();
  fileSize = response.ContentLength;
  ftpStream.Close();
  response.Close();
  }
  catch (Exception ex)
  {
  Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileSize Error --> " + ex.Message);
  }
  return fileSize;
 }
 /// <summary>
 /// 改名
 /// </summary>
 /// <param name="currentFilename"></param>
 /// <param name="newFilename"></param>
 public void ReName(string currentFilename, string newFilename)
 {
  FtpWebRequest reqFTP;
  try
  {
  reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + currentFilename));
  reqFTP.Method = WebRequestMethods.Ftp.Rename;
  reqFTP.RenameTo = newFilename;
  reqFTP.UseBinary = true;
  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
  Stream ftpStream = response.GetResponseStream();
  ftpStream.Close();
  response.Close();
  }
  catch (Exception ex)
  {
  Insert_Standard_ErrorLog.Insert("FtpWeb", "ReName Error --> " + ex.Message);
  }
 }
 /// <summary>
 /// 移动文件
 /// </summary>
 /// <param name="currentFilename"></param>
 /// <param name="newFilename"></param>
 public void MovieFile(string currentFilename, string newDirectory)
 {
  ReName(currentFilename, newDirectory);
 }