Use Asp.net to retrieve all links on the page

Private void page_load (Object sender, system. eventargse)
{
// Place the user here Code To initialize the page

String url = http://www.jb51.net;
System. net. httpwebrequesthttpreq;
System. net. httpwebresponsehttpres;
System. urihttpurl = new uri (URL );
Httpreq = (system. net. httpwebrequest) system. net. webrequest. Create (httpurl );
Httpreq. method = "get ";
Httpres = (system. net. httpwebresponse) httpreq. getresponse ();
Httpreq. keepalive = false;
System. Io. streamreadersreader = Newsystem. Io. streamreader (httpres. getresponsestream (), system. Text. encoding. getencoding ("gb2312 "));
Stringres = sreader. readtoend ();
// Use a regular expression to filter the obtained text streams.
Stringstrregex = @ "<A. +? A> ";
System. Text. regularexpressions. regexr;
System. Text. regularexpressions. matchcollectionm;
R = Newsystem. Text. regularexpressions. RegEx (strregex, system. Text. regularexpressions. regexoptions. ignorecase );
M = R. Matches (RES );
Response. Write ("This page has a total of" + M. Count + "hyperconnections <br/> ");
For (INTI = 0; I <M. Count; I ++)
{
Response. Write (M [I]. Value + "<br/> ");
}
}