Hi,
I am working in an appication where i have to download and upload files from ftp server. File upload process is working fine. But when i am trying to fetch all the file names from a folder in ftp server, it shows me an error "The remote server returned an error: (503) Server Unavailable."
The code is as follow

    private string[] GetFiles(string WildCard)
    {
         string ReturnStr = "";
         FtpWebRequest request = WebRequest.Create("ftp://machine IP/FolderName/" + WildCard) as FtpWebRequest;
         request.Method = WebRequestMethods.Ftp.ListDirectory;
         request.Credentials = new NetworkCredential("", "");
         StringWriter sw = new StringWriter();
         WebResponse response = request.GetResponse();
         Stream responseStream = response.GetResponseStream();
         int ch;

         while ((ch = responseStream.ReadByte()) != -1)
         ReturnStr = ReturnStr + Convert.ToChar(ch);

         responseStream.Close();
         response.Close();
         string[] sep = {"\r\n"};
         string[] Files = ReturnStr.Split(sep, StringSplitOptions.RemoveEmptyEntries);
         return Files;
    }

Thanks in Advance.