c# ftp 检查目录是否存在

Question

http://blog.163.com/china__xuhua/blog/static/199723169201111225136564/

Answer 1

        //上传文件
        public static Boolean FtpUpload(string ftpPath,string localFile)
        {
            //检查目录是否存在，不存在创建
            FtpCheckDirectoryExist(ftpPath);
            FileInfo fi = new FileInfo(localFile);
            FileStream fs = fi.OpenRead();
            long length = fs.Length;
            FtpWebRequest req = (FtpWebRequest)WebRequest.Create(ftpServerIP + ftpPath + fi.Name);
            req.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            req.Method = WebRequestMethods.Ftp.UploadFile;
            req.ContentLength = length;
            req.Timeout = 10 * 1000;
            try
            {
                Stream stream = req.GetRequestStream();
                int BufferLength = 2048; //2K   
                byte[] b = new byte[BufferLength];
                int i;
                while ((i = fs.Read(b, 0, BufferLength)) > 0)
                {
                    stream.Write(b, 0, i);
                }
                stream.Close();
                stream.Dispose();
            }
            catch (Exception e)
            {
                ErrLog(e.Message + e.StackTrace);
                return false;
            }
            finally
            {
                fs.Close();
                req.Abort();
            }
            req.Abort();
            return true;
        }        //判断文件的目录是否存,不存则创建
        public static void FtpCheckDirectoryExist(string destFilePath)
        {
            string fullDir = FtpParseDirectory(destFilePath);
            string[] dirs = fullDir.Split('/');
            string curDir = "/";
            for (int i = 0; i < dirs.Length; i++)
            {
                string dir = dirs[i];
                //如果是以/开始的路径,第一个为空  
                if (dir != null && dir.Length > 0)
                {
                    try
                    {
                        curDir += dir + "/";
                        FtpMakeDir(curDir);
                    }
                    catch (Exception)
                    {}
                }
            }
        }        public static string FtpParseDirectory(string destFilePath)
        {
            return destFilePath.Substring(0, destFilePath.LastIndexOf("/"));
        }          //创建目录
        public static Boolean FtpMakeDir(string localFile)
        {
            FtpWebRequest req = (FtpWebRequest)WebRequest.Create(ftpServerIP + localFile);
            req.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            req.Method = WebRequestMethods.Ftp.MakeDirectory;
            try
            {
                FtpWebResponse response = (FtpWebResponse)req.GetResponse();
                response.Close();
            }
            catch (Exception)
            {
                req.Abort();
                return false;
            }
            req.Abort();
            return true;
        }

Answer 2

http://blog.csdn.net/chinacsharper/article/details/9501773这里面找。