在FTP WebRequest C＃中实现SOCKS 5代理

Question

我编写了一个应用程序，用于从FTP服务器下载XML文件/将其上传到FTP服务器，并使用了FtpWebRequest方法。

现在我必须添加一个SOCKS 5代理，因为否则服务器将无法访问，但无法找到一种方法来实现。

这里没有代理就可以正常下载和上传代码：

public void Download(string LocalFile)
    {
        try
        {

            ftpRequest = (FtpWebRequest)FtpWebRequest.Create("ftp://" + LoginData.Servername + "/" + LoginData.RemoteFile);

            ftpRequest.Credentials = new NetworkCredential(LoginData.Username, LoginData.Passwort); 

            ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile;

            ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();

            ftpStream = ftpResponse.GetResponseStream();

            FileStream localFileStream = new FileStream(LocalFile, FileMode.OpenOrCreate);

            byte[] byteBuffer = new byte[bufferSize];
            int bytesRead = ftpStream.Read(byteBuffer, 0, bufferSize);

            try
            {
                while (bytesRead > 0)
                {
                    localFileStream.Write(byteBuffer, 0, bytesRead);
                    bytesRead = ftpStream.Read(byteBuffer, 0, bufferSize);
                }
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }

            localFileStream.Close();
            ftpStream.Close();
            ftpResponse.Close();
            ftpRequest = null;
        }
        catch (Exception ex) { Console.WriteLine(ex.ToString()); }
        return;
    }

上传：

public void Upload(string localFile)
    {
        try
        {

            ftpRequest = (FtpWebRequest)WebRequest.Create("ftp://" + LoginData.Servername + "/" + LoginData.RemoteFile);

            ftpRequest.Credentials = new NetworkCredential(LoginData.Username, LoginData.Passwort);

            ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;

            try
            {

                WebResponse response = ftpRequest.GetResponse();
            }
            catch (Exception e)
            {
                throw e;
            }


            ftpStream = ftpRequest.GetRequestStream();

            FileStream localFileStream = new FileStream(localFile, FileMode.Open);

            byte[] byteBuffer = new byte[bufferSize];
            int bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);

            try
            {
                while (bytesSent != 0)
                {
                    ftpStream.Write(byteBuffer, 0, bytesSent);
                    bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);
                }
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }

            localFileStream.Close();
            ftpStream.Close();
            ftpRequest = null;
            File.Delete("RSS_Daten.xml");
        }
        catch (Exception ex) { Console.WriteLine(ex.ToString()); }
        return;
    }

也许有人可以帮助我。谢谢