FTP文件下载

using EnterpriseDT.Net.Ftp;

/// <summary>
        /// 下载FTP文件
        /// </summary>
        /// <param name="ftpInfo">FTP类</param>
        /// <returns></returns>
        public void DownFtpFiles()
        {
            #region
            while (true)
            {
                List<string> fileList = new List<string>();
                EnterpriseDT.Net.Ftp.FTPClient ftpClient = new EnterpriseDT.Net.Ftp.FTPClient();
                try
                {
                    System.Threading.Thread.Sleep();
                    log.Info("开始登陆FTP服务器");
                    ftpClient.RemoteHost = ftpIP;
                    ftpClient.Connect();
                    ftpClient.Login(ftpUserName, ftpPassword);
                    ftpClient.TransferType = FTPTransferType.BINARY;

                    //获得所有文件列表
                    GetFileList(ftpClient, ftpRoot, ref fileList);

                    log.Info("FTP服务器共有" + fileList.Count + "个文件");
                    //开始下载文件
                    if (fileList != null && fileList.Count > )
                    {
                        string fileName = null;
                        foreach (string fileUrl in fileList)
                        {
                            #region 判断文件是否已经下载过
                            fileName = fileUrl;
                            if (fileName.StartsWith("url_") && fileName.ToLower().EndsWith(".dat"))
                            {
                                try
                                {
                                    log.Info("开始下载，" + fileUrl);
                                    ftpClient.Get(tempFileDir + "\\" + fileName, fileUrl);
                                    File.Move(tempFileDir + "\\" + fileName, downloadFileDir + "\\" + fileName);
                                  //记录到已下载的列表中
                                    this.AppendDownloaded(fileUrl);
                                    //删除远程文件
                                    ftpClient.Delete(fileUrl);

                                    log.Info("下载成功，" + fileUrl);
                                }
                                catch (Exception exp)
                                {
                                    log.Info("下载或移动失败，" + fileUrl + "，原因是：" + exp.ToString());
                                }
                            }
                            #endregion
                        }
                    }
                }
                catch (Exception exp)
                {
                    log.Info("下载或移动失败，原因是：" + exp.ToString());
                }
                finally
                {
                    try
                    {
                        if (ftpClient.IsConnected)
                            ftpClient.Quit();
                    }
                    catch (Exception ex)
                    {
                        log.Info("关闭FTP连接异常，原因是：" + ex.ToString());
                    }
                }

                //System.Threading.Thread.Sleep(Tools.GetInt32(Tools.GetWebSetting("DOWNLOAD_INTERVAL"), 30) * 1000 * 60);
            }
            #endregion
        }