Obtain webpage HTML code

Public bool getweb (string strurl, out string BUF)
{
Buf = "";
Try
{
// URI url = new uri (strurl, false );
Httpwebrequest request;
Request = (httpwebrequest) webrequest. Create (strurl );
Request. method = "Post"; // POST Request Method
Request. contenttype = "text/html; charset = gb2312"; // content type
String paraurlcoded = system. Web. httputility. urlencode (""); // The parameter is URL encoded.
Byte [] payload;
Payload = system. Text. encoding. getencoding ("gb2312"). getbytes (paraurlcoded); // convert the URL-encoded string into bytes.
Request. contentlength = payload. length; // you can specify the request contentlength.
Stream writer = request. getrequeststream (); // get the request stream
Writer. Write (payload, 0, payload. Length); // write request parameters to the stream
Writer. Close (); // close the request stream
Httpwebresponse response;
Response = (httpwebresponse) request. getresponse (); // get the response stream
Stream S;
S = response. getresponsestream ();
Streamreader objreader = new streamreader (S, system. Text. encoding. getencoding ("gb2312 "));
String html = "";
String Sline = "";
Int I = 0;
While (Sline! = NULL)
{
I ++;
Sline = objreader. Readline ();
If (Sline! = NULL)
HTML + = Sline;
}
// Html = html. Replace ("& lt;", "<");
// Html = html. Replace ("& gt;", "> ");
Buf = HTML;
Return true;
}
Catch (exception X)
{
Buf = x. Message. tostring ();
Return false;
}
} With Cookie: cookiecontainer cc = new cookiecontainer (); Public bool getweb (string strurl, out string BUF)
{
Buf = "";
Try
{Httpwebrequest request;
Request = (httpwebrequest) webrequest. Create (strurl );
Request. method = "Post"; // POST Request Method
Request. contenttype = "text/html; charset = gb2312"; // content type
String paraurlcoded = system. Web. httputility. urlencode (""); // The parameter is URL encoded.
Byte [] payload;
Payload = system. Text. encoding. getencoding ("gb2312"). getbytes (paraurlcoded); // convert the URL-encoded string into bytes.
Request. contentlength = payload. length; // you can specify the request contentlength.
Stream writer = request. getrequeststream (); // get the request stream
Writer. Write (payload, 0, payload. Length); // write request parameters to the stream
Writer. Close (); // close the request stream
Httpwebresponse response;
Response = (httpwebresponse) request. getresponse (); // get the response stream
Stream S;
S = response. getresponsestream ();
Streamreader objreader = new streamreader (S, system. Text. encoding. getencoding ("gb2312 "));
String html = "";
String Sline = "";
Int I = 0;
While (Sline! = NULL)
{
I ++;
Sline = objreader. Readline ();
If (Sline! = NULL)
HTML + = Sline;
}

Buf = HTML;
Return true;
}
Catch (exception X)
{
Buf = x. Message. tostring ();
Return false;
}
}
Public bool getweb (string strurl, out string Buf, string postdata)
{
Buf = "";
Try
{

Asciiencoding encoding = new asciiencoding ();
Byte [] DATA = encoding. getbytes (postdata); httpwebrequest request = (httpwebrequest) webrequest. Create (strurl );
Request. method = "Post ";
Request. contenttype = "application/X-WWW-form-urlencoded ";
Request. contentlength = data. length;
Stream newstream = request. getrequeststream ();
Newstream. Write (data, 0, Data. Length );

Newstream. Close ();

Request. cookiecontainer = cc;

Httpwebresponse response = (httpwebresponse) request. getresponse ();
Cc. Add (response. Cookies );
Stream stream = response. getresponsestream ();
String shtml = new streamreader (stream, system. Text. encoding. Default). readtoend ();
Buf = shtml;
Return true;
}
Catch (exception X)
{
Buf = x. Message. tostring ();
Return false;
}
}

From http://www.cnblogs.com/jacktu/archive/2007/07/30/836365.html