WebClient请求期间发生异常（拒绝访问路径“ E：\ Zipfils \ Backups \ Hyderabad”。）

Question

我正在使用以下代码从ftp服务器从目录（例如“ hedrabad”）下载ZIP文件。

尝试{

            FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(Procedures.ftpurl);
            ftpRequest.Credentials = new NetworkCredential(Procedures.ftpuser, Procedures.ftpPassword);
            ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
            FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
            StreamReader streamReader = new StreamReader(response.GetResponseStream());
            List<string> directories = new List<string>();

            string line = streamReader.ReadLine();
            while (!string.IsNullOrEmpty(line))
            {
                directories.Add(line);
                line = streamReader.ReadLine();
            }
            streamReader.Close();

            using (WebClient ftpClient = new WebClient())
            {
                ftpClient.Credentials = new System.Net.NetworkCredential(Procedures.ftpuser, Procedures.ftpPassword);

                for (int i = 0; i <= directories.Count - 1; i++)
                {
                    //if (directories[i].Contains("."))
                    //{
                    if (directories[i].ToString() == "Hyderabad")
                    {
                        log.Info("File Downloding  Start : " + DateTime.Now.ToString("HH:mm ss"));
                        if (!Directory.Exists(OGSync.FTPPath + "\\Backups\\" + directories[i].ToString()))
                        {
                            Directory.CreateDirectory(OGSync.FTPPath + "\\Backups\\" + directories[i].ToString());
                        }
                        //string path = Procedures.ftpurl;
                        string path = Procedures.ftpurl + directories[i].ToString();
                        string trnsfrpth = OGSync.FTPPath + "Backups\\" + directories[i].ToString();

                        //string trnsfrpth = @"E:\\Test\" + directories[i].ToString();
                        ftpClient.DownloadFile(path, trnsfrpth);
                        //ftpClient.DownloadFile(path, @"C:\file.zip");
                    }
                    // }
                }
            }
        }
        catch (Exception ex)
        {
            log.Error(ex.Message);
        }
        return true;
    }

我遇到了我尝试过但未解决的错误。请提供任何可以解决此问题的想法。

例外：对路径'E：\ Zipfils \ Backups \ Hyderabad'的访问被拒绝。

内部异常：对路径'E：\ Zipfils \ Backups \ Hyderabad'的访问被拒绝。

StackTrace：位于System.Net.WebClient.DownloadFile（Uri地址，字符串fileName），位于E：\ Modular代码和Installer \ OGServerSync \ OGServerSync \ ServerSync.cs：第64行的OGServerSync.ServerSync.Downloadfile（）处。 >

消息：WebClient请求期间发生了异常。