/// <summary>
       /// 根据ftp路径返回目录下的文件名称 不带扩展名
       /// </summary>
       /// <param name="ftpDir"></param>
       /// <param name="userName"></param>
       /// <param name="passWord"></param>
       /// <returns></returns>
      public static ArrayList GetFileNames(string ftpDir, string userName, string passWord)
       {
           var fileNames = new ArrayList();

           var reqFtp = (FtpWebRequest)WebRequest.Create(new Uri(ftpDir));
           reqFtp.UsePassive = false;
           reqFtp.UseBinary = true;
           //reqFTP.EnableSsl = true;//加密方式传送数据 FTP 服务器要支持
           reqFtp.Credentials = new NetworkCredential(userName, passWord);
           reqFtp.Method = WebRequestMethods.Ftp.ListDirectory;
           var response = (FtpWebResponse)reqFtp.GetResponse();
           var reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
           string fileName = reader.ReadLine();
           while (fileName != null)
           {
               fileNames.Add(Path.GetFileNameWithoutExtension(fileName));
               fileName = reader.ReadLine();
           }
           reader.Close();
           response.Close();
           //var fileNames = reader.ReadToEnd();
           reader.Close();
           response.Close();
           return fileNames;
       }