Question

I’m trying to save cookies in a post request. Here is my code :

        CookieContainer myCookieContainer = new CookieContainer();
        HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
        myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
        myHttpWebRequest.UserAgent = userAgent;
        myHttpWebRequest.CookieContainer = myCookieContainer;
        myHttpWebRequest.Method = "POST";

        byte[] postdata = encoding.GetBytes(submitString);

        myHttpWebRequest.BeginGetRequestStream(async1 =>
        {
            using (Stream stream = myHttpWebRequest.EndGetRequestStream(async1))
                stream.Write(postdata, 0, postdata.Length);
            myHttpWebRequest.BeginGetResponse(async2 =>
            {
                HttpWebResponse rep = (HttpWebResponse)myHttpWebRequest.EndGetResponse(async2);
                CookieCollection cookies = rep.Cookies;
                using (Stream stream = rep.GetResponseStream())
                using (StreamReader sr = new StreamReader(stream))
                {
                    String content = sr.ReadToEnd();
                    if (pageDownloadedEventHandler != null)
                        pageDownloadedEventHandler(content);
                }
            }, null);
        }, null);

Alaways the CookieContainer is empty.
How to get the cookies?

Answer 1

Your code seems to be perfect, if the server sends you back any cookies you should see them in rep.Cookies, as well as in myCookieContainer.

If you want to be sure use Fiddler or Wireshark to analyze the HTTP network traffic and look for the cookies, but if I’m right you won’t find them. In this case my idea is to analyze the network traffic doing the same request with your browser, maybe the php/asp.net/other app decided not to set cookies due to some missing request headers.