Program pencuri latar belakang .net

private void Page_Load(pengirim objek, System.EventArgs e)
{

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

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

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

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


string sGaris = "";
ke dalam saya = 0;

sementara (sLine!=null)
{
saya++;
sLine = objReader.ReadLine();
jika (sGaris!=null)
HTML += sGaris;
}

Suhu string= "";
int mulai,berhenti;

// string aa="<div class="prakiraan malam lima hari" style="border:none;">";

//string aa="<div class="prakiraan lima hari" style="border:none;">";

string aa="<tabel><th>Hari ini</th>";
mulai = HTML.IndexOf(aa,0,HTML.Panjang);

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


temp = HTML.Substring(mulai, berhenti - mulai);

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

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
}