.net 后台的小偷程序

private void Page_Load(object sender, System.EventArgs e)
{

WebRequest wreq=WebRequest.Create("http://weather.yahoo.com/forecast/CHXX0133_c.html");

HttpWebResponse wresp=(HttpWebResponse)wreq.GetResponse();

string HTML ="";
Stream s=wresp.GetResponseStream();

StreamReader objReader = new StreamReader(s,System.Text.Encoding.GetEncoding("GB2312"));


string sLine = "";
int i = 0;

while (sLine!=null)
{
i ;
sLine = objReader.ReadLine();
if (sLine!=null)
HTML = sLine;
}

String temp= "";
int start,stop;

// string aa="<div class=\"five-day-forecast night\" style=\"border:none;\">";

//string aa="<div class=\"five-day-forecast\" style=\"border:none;\">";

string aa="<table><th>Today</th>";
start = HTML.IndexOf(aa,0,HTML.Length);

stop = HTML.IndexOf("</table>",start) 8;


temp = HTML.Substring(start, stop - start);

this.Weather2.Text=temp;
string cc="<tr class=\"titles\"><td>";
//
int aa1 =temp.IndexOf(cc,0,temp.Length);

int bb=temp.IndexOf("</td>",aa1);

this.Weather2.Text=temp.Substring(aa1, bb - aa1).ToString();


string ee="<tr class=\"temps\">";

int aa2 =temp.IndexOf(ee,0,temp.Length);

int bb1=temp.IndexOf("</td>",aa2);

this.Label1.Text=temp.Substring(aa2, bb1 - aa2).ToString();

// 在此处放置用户代码以初始化页面
}