List content of ftp-server

Question

Hi, I'm writing a real simple program, all it has to do is return the content of a specific ftp-server. But for some reason my List-command do not return any data. My sourcecode: Socket s; string command =""; string user = "anonymous"; string pass = "[email protected]"; try { int port = 21; s = new Socket(AddressFamily.InterNetwork , SocketType.Stream, ProtocolType.Tcp); IPHostEntry iphost = Dns.GetHostByName("ftp.uio.no"); ip = iphost.AddressList[0];//ip of the host name IPEndPoint iep = new IPEndPoint(ip , port); s.Connect(iep); Response(); SendRequest(s, "USER " + user + "\r\n"); Response(); SendRequest(s,"PASS " + pass + "\r\n"); Response(); SendRequest(s,"PASV" + "\r\n"); Response(); SendRequest(s,"LIST" + "\r\n"); MessageBox.Show("finale result:"); Response(); } catch(Exception test) { MessageBox.Show("error listing files: " + test.Message); } The response-function works like a charm for user. pass and pasv, but returns no data for the list-command. Hope someone can help me. y.s. -la