C # Analog HTTP sends a post or GET request

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privatestringHttpPost(stringUrl, stringpostDataStr)        {            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);            request.Method = "POST";            request.ContentType = "application/x-www-form-urlencoded";            request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);            request.CookieContainer = cookie;            Stream myRequestStream = request.GetRequestStream();            StreamWriter myStreamWriter = newStreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));            myStreamWriter.Write(postDataStr);            myStreamWriter.Close();            HttpWebResponse response = (HttpWebResponse)request.GetResponse();            response.Cookies = cookie.GetCookies(response.ResponseUri);            Stream myResponseStream = response.GetResponseStream();            StreamReader myStreamReader = newStreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));            stringretString = myStreamReader.ReadToEnd();            myStreamReader.Close();            myResponseStream.Close();            returnretString;        }        publicstringHttpGet(string Url, stringpostDataStr)        {            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == ""? "": "?") + postDataStr);            request.Method = "GET";            request.ContentType = "text/html;charset=UTF-8";            HttpWebResponse response = (HttpWebResponse)request.GetResponse();            Stream myResponseStream = response.GetResponseStream();            StreamReader myStreamReader = newStreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));            stringretString = myStreamReader.ReadToEnd();            myStreamReader.Close();            myResponseStream.Close();            returnretString;        }

　　

Sometimes also used in the post of the cookie, like login 163 email when you need to send a cookie, so in the external a cookie property at any time to save Cookiecontainer cookie = new Cookiecontainer ();

！ Note: Sometimes the request is redirected, but we need to get something from the redirect URL, such as the success of the QQ login to get the SID, but the above will automatically follow the redirect address to jump. We can use:
Request. AllowAutoRedirect = false; Set redirect disabled, you can get the redirect address from the Headers Location property

C # impersonate HTTP to send a post or GET request