ftp上传文件以及发命令

1.ftpweb.cs是将文件以ftp的形式上传到ftp服务器；

eg: FtpWeb ftpUpload = new FtpWeb("202.105.49.15", "", "aaaa", "aaaa556");
      ftpUpload.Upload("D:\\test.txt");

2.ftpClient类，完成文件的上传，以及向服务器发送命令，并接收服务器返回的信息，根据返回信息做相应处理；

eg:

  /// <summary>
        /// 上传文件到ftp服务器，如果成功返回"1",网盘磁盘空间不够返回"-1",否则返回出错信息；
        /// </summary>
        /// <param name="upFile"></param>
        /// <param name="username"></param>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public string uploadFileToFtpServer(UploadFile upFile, string username, string filePath)
        {
            string errMsg = string.Empty;
            string replyMsg = string.Empty;
            try
            {
                FileInfo file = new FileInfo(filePath);
                if (file == null)
                {
                    errMsg += "登录网盘->上传的文件不存在<br/>";
                    return errMsg;
                }

                FTPClient ftpc = new FTPClient(upFile.FtpServerIp, upFile.FtpServerPort);
                ftpc.login(username, upFile.AuthCode);

                errMsg += "登录网盘->登录成功  (" + DateTime.Now.ToString() + ")<br/>";
                string[] arrAllo = { "213", "501" };

                //检查ftp的容量；
                replyMsg = ftpc.quote("allo", arrAllo);
                //返回"213 可用空间大小"
                errMsg += "登录网盘->查询服务器容量,返回信息：" + replyMsg + " (" + DateTime.Now.ToString() + ")<br/>";
                int quot = Convert.ToInt32(replyMsg.Split(' ')[1]);

                if (quot < file.Length)
                {
                    errMsg += "登录网盘->网盘空间不够，当前文件大小为：" + file.Length + " (" + DateTime.Now.ToString() + ")<br/>";
                    //退出FTP服务器
                    ftpc.quit();
                    return "-1";
                }

                ftpc.connectmode= FTPConnectMode.PASV;
                ftpc.transfertype= FTPTransferType.BINARY;
                //上传文件；
                ftpc.put(filepath, upFile.FileId);
                //校验文件
                string[] arrCRC = { "900", "901" };
                string strCRC = "CRC21 " + upFile.FileId + " " + file.Length.ToString();
                replyMsg = ftpc.quote(strcrc, null);

         errMsg += "登录网盘->校验文件返回信息：" + replyMsg + " (" + DateTime.Now.ToString() + ")<br/>";

                //轮询检查文件是否上传完成
                string code = string.Empty;
                string[] arrChkcmp = { "900", "902", "904" };
                string strChk = "Chkcmp " + upFile.FileId;

                while (true)
                {

                    replyMsg = ftpc.quote(strchk, arrChkcmp);
             errMsg += "登录网盘->轮询检查文件是否上传完成,返回信息：" + replyMsg + " (" + DateTime.Now.ToString() + ")<br/>";

                    code = replyMsg.Substring(0, 3);
                    if (code == "900")
                    {
                        break;
                    }
                    else
                    {
                        Thread.Sleep(30000);
                    }
                }
                errMsg += "登录网盘->流程完毕,断开连接!(" + DateTime.Now.ToString() + ")<br/>";
              
               //退出FTP服务器
                ftpc.quit();
                       }
            catch(Exception e)
            {
                             return errMsg +"异常信息："+ e.Message;
          
               
            }
            return "1";   
      }