Какой путь предпочтительнее?
А:
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
Stream reqStream = req.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
Б:
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.GetRequestStream().Write(data, 0, data.Length);