C#如何遍历FTP下所有文件夹

Question

如题：
    现在FTP地址
    FTP://****.xicp.net/
    地址下面有文件夹A~C和文件abc.txt string ftpURI = "ftp://****.xicp.net/";
            string ftpUserID = "abc";
            string ftpPassword = "abc";
            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.ListDirectory;
                WebResponse response = ftp.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
                string line = reader.ReadLine();
                //string fn = System.Web.HttpUtility.UrlDecode(line, System.Text.Encoding.GetEncoding("GB2312"));                while (line != null)
                {
                    result.Append(line);
                    result.Append("\n");
                    line = reader.ReadLine();
                }
                result.Remove(result.ToString().LastIndexOf("\n"), 1);
                reader.Close();
                response.Close();   现在用上面方法只能得到abc.txt
   如何遍历得到A~C文件夹？c#

Answer 1

            // Get the object used to communicate with the server.
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/");
            request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;            // This example assumes the FTP site uses anonymous logon.
            request.Credentials = new NetworkCredential ("anonymous","[email protected]");            FtpWebResponse response = (FtpWebResponse)request.GetResponse();
    
            Stream responseStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(responseStream);
            Console.WriteLine(reader.ReadToEnd());            Console.WriteLine("Directory List Complete, status {0}", response.StatusDescription);
    
            reader.Close();
            response.Close();

Answer 2

  public string[] GetDirectoryList(string url)
        {
            string[] directory = GetFilesDetailList(url);
            string[] dir = new string[directory.Length];
            int count = 0;
              if (directory == null)
                return null;            //WIN
            foreach (string str in directory)
            {
                if (str.Trim().Contains("<DIR>"))
                { 
                    dir[count] = str.Substring(str.IndexOf("<DIR>") + 5).Trim();                    count = count + 1;
                }
            }            if (count > dir.Length)
            {
                return dir;
            }
 
            //Sevr-U
            foreach (string str in directory)
            {
                if (str.Length > 0 && str.Trim().Substring(0, 1).ToUpper() == "D")
                {
                   dir[count] = str.Substring(54).Trim();
                   count = count + 1;
                }
            }            return dir;
             
        }        /// <summary>
        /// 获取ftp文件详细信息
        /// </summary>
        /// <param name="url">ftp服务器地址加文件名如：(ftp://10.0.0.10/1.xml)</param>
        /// <returns>返回文件详细信息</returns>
        public string[] GetFilesDetailList(string url)
        {
            
            try
            {
                StringBuilder result = new StringBuilder();
                FtpWebRequest ftp;
                ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
                ftp.Credentials = new NetworkCredential(m_UserName, m_Password);
                ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                WebResponse response = ftp.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());
                string line = reader.ReadLine();                if (line == null || line.Length < 0)
                    return null;                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)
            { 
                throw ex;            }
        }