用C#读取sina天气预报到wap页面

lt.aspx#Goodview"＞首 页＜/mobile:Link＞＜/FONT＞＜/mobile:form＞

public class weather : System.Web.UI.MobileControls.MobilePage
...{
protected System.Web.UI.MobileControls.Label Label1;
protected System.Web.UI.MobileControls.Label Label2;
protected System.Web.UI.MobileControls.SelectionList s_weather;
protected System.Web.UI.MobileControls.Label l_date;
protected System.Web.UI.MobileControls.Label l_city;
protected System.Web.UI.MobileControls.Label l_wea;
protected System.Web.UI.MobileControls.Label l_sky;
protected System.Web.UI.MobileControls.Label l_w1;
protected System.Web.UI.MobileControls.Label l_w2;
protected System.Web.UI.MobileControls.Label l_w3;
protected System.Web.UI.MobileControls.Link Link1;
protected System.Web.UI.MobileControls.Command Command1;
protected System.Web.UI.MobileControls.Label Label3;
protected System.Web.UI.MobileControls.Form Form1;

private void Page_Load(object sender, System.EventArgs e)
...{
// 在此处放置用户代码以初始化页面
if (!Page.IsPostBack)
...{
string city = "深圳";
int start,stop;
string weather1,weather2,wea;
string wea_city = weather_city(city);
wea_city = wea_city.Replace(" ","");

start = wea_city.IndexOf("<b>",0,wea_city.Length);
stop = wea_city.IndexOf("</b>", start);
weather1 = wea_city.Substring(start, stop-start).Trim() + " ";
weather1 = weather1.Substring(3,8).Trim();

start = wea_city.IndexOf("<tdstyle="font-size:40px;font-family:TimesNewRoman;font-weight:bold;">",0,wea_city.Length);
stop = wea_city.IndexOf("℃",start) + 40;
weather2 = wea_city.Substring(start, stop-start);
wea