使用ASP.net登录到其他网站

Question

i tried many times using httprequest but not working... here my code

//POSTDATA=inputUserName=dmsang&inputPassword=123456789
string strURL;
string strPostData = "";
string strResult;
HttpWebResponse webrespond;
HttpWebRequest webresquest;
StreamReader sr;
StreamWriter sw;

//======================================

//string a = form1.FindControl("chogochu");

//set url to post
strURL = "http://up.4share.vn/?act=login";

//post some data        
strPostData = "inputUserName=dmsang&inputPassword=123456789";

webresquest = (HttpWebRequest)WebRequest.Create(strURL);
webresquest.Method = "POST";
webresquest.Referer = strURL;
webresquest.ContentType = "application/x-www-form-urlencoded";
webresquest.ContentLength = strPostData.Length;

//post data
sw = new StreamWriter(webresquest.GetRequestStream());
sw.Write(strPostData);
sw.Close();

//read the returned data
webrespond = (HttpWebResponse)webresquest.GetResponse();
sr = new StreamReader(webrespond.GetResponseStream());
strResult = sr.ReadToEnd();
sr.Close();

//write the result
TextBox1.Text = strResult;

if Location in Response Header = /?act=accinfo is Login Successful

Answer 1

You will have to examine the response ( strResult and webrespond.Headers ) to see what the error is. The problem should be shown somewhere in there, and what you find will determine what step you need to take next.