programa ladrão de fundo .net

private void Page_Load (remetente do objeto, System.EventArgs e)
{

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

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

stringHTML="";
Fluxo s=wresp.GetResponseStream();

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


string sLine = "";
int eu = 0;

enquanto (sLine!=nulo)
{
eu++;
sLine = objReader.ReadLine();
if (sLine!=nulo)
HTML += sLine;
}

String temp= "";
int iniciar, parar;

// string aa="<div class="noite prevista para cinco dias" style="border:none;">";

//string aa="<div class="previsão de cinco dias" style="border:none;">";

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

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


temp = HTML.Substring(iniciar, parar - iniciar);

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
}