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用C#读取sina天气预报到wap页面

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＜%@ Register TagPrefix="mobile"
;Namespace="System.Web.UI.MobileControls"
;Assembly="System.Web.Mobile" %＞＜%@ Page language="c#"
;Codebehind="weather.aspx.cs" Inherits="goodwap.life.weather"
;AutoEventWireup="false" %＞＜mobile:form id="Form1" runat="server"＞
;＜FONT face="宋体"＞
;＜mobile:Label id="Label3" runat="server"
;Font-Bold="True"＞【生活资讯】＜/mobile:Label＞
;＜mobile:Label id="Label1" runat="server"
;Font-Italic="True"＞==天气预报==＜/mobile:Label＞
;＜mobile:Label id="l_date" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_city" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_wea" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_sky" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_w1" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_w2" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="l_w3" runat="server"＞＜/mobile:Label＞
;＜mobile:Label id="Label2" runat="server"＞【请选择城市名】：＜/mobile:Label＞
;＜mobile:SelectionList id="s_weather" runat="server"＞
;＜Item Value="深圳" Text="深圳" Selected="True"＞＜/Item＞
;＜Item Value="广州" Text="广州"＞＜/Item＞
;＜Item Value="上海" Text="上海"＞＜/Item＞
;＜Item Value="北京" Text="北京"＞＜/Item＞
;＜Item Value="天津" Text="天津"＞＜/Item＞
;＜Item Value="武汉" Text="武汉"＞＜/Item＞
;＜Item Value="重庆" Text="重庆"＞＜/Item＞
;＜Item Value="成都" Text="成都"＞＜/Item＞
;＜Item Value="南京" Text="南京"＞＜/Item＞
;＜Item Value="香港" Text="香港"＞＜/Item＞
;＜Item Value="澳门" Text="澳门"＞＜/Item＞
;＜/mobile:SelectionList＞
;＜mobile:Command id="Command1" runat="server"＞查 询＜/mobile:Command＞
;＜mobile:Link id="Link1" runat="server"
;NavigateUrl="../default.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);
;weather2 = weather2.Substring(stop-start-42,40).Trim();
;weather2 = weather2.Replace(" ","");

start = wea_city.IndexOf("<fontcolor=#183888><b>", 0,
;wea_city.Length);
;stop = wea_city.IndexOf("</b></font>",start);
;wea = wea_city.Substring(start,stop-start);
;wea = wea.Substring(22,wea.Length-22) + "kbrk";
;wea = wea.Replace(" ", "");
;wea = wea.Replace(">", "k");
;wea = wea.Replace("<", "k");
;wea = wea.Replace("kbrk", "k");
;string [] wall = null;
;char[] seperator = ...{'k'};
;wall = wea.Split(seperator);

/**///////////////////////////////////////
;l_city.Text = "[城市]：" + city;
;l_wea.Text = "[天气]：" + weather1;
;l_sky.Text = "[温度]：" + weather2;
;/**////////
;l_date.Text = wall[0];
;l_w1.Text = wall[1];
;l_w2.Text = wall[2];
;l_w3.Text = wall[3];
;}
;}

Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
;override protected void OnInit(EventArgs e)
;...{
;//
;// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
;//
;InitializeComponent();
;base.OnInit(e);
;}

/**//// <summary>
;/// 设计器支持所需的方法 - 不要使用代码编辑器修改
;/// 此方法的内容。
;/// </summary>
;private void InitializeComponent()
;...{
;this.Command1.Click += new System.EventHandler(this.Command1_Click);
;this.Load += new System.EventHandler(this.Page_Load);

}
;#endregion

private void Command1_Click(object sender, System.EventArgs e)
;...{
;string city = s_weather.Selection.Value.Trim();
;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);
;weather2 = weather2.Substring(stop-start-42,40).Trim();
;weather2 = weather2.Replace(" ","");

start = wea_city.IndexOf("<fontcolor=#183888><b>", 0,
;wea_city.Length);
;stop = wea_city.IndexOf("</b></font>",start);
;wea = wea_city.Substring(start,stop-start);
;wea = wea.Substring(22,wea.Length-22) + "kbrk";
;wea = wea.Replace(" ", "");
;wea = wea.Replace(">", "k");
;wea = wea.Replace("<", "k");
;wea = wea.Replace("kbrk", "k");
;string [] wall = null;
;char[] seperator = ...{'k'};
;wall = wea.Split(seperator);

/**///////////////////////////////////////
;l_city.Text = "[城市]：" + city;
;l_wea.Text = "[天气]：" + weather1;
;l_sky.Text = "[温度]：" + weather2;
;/**////////
;l_date.Text = wall[0];
;l_w1.Text = wall[1];
;l_w2.Text = wall[2];
;l_w3.Text = wall[3];
;}

public string weather_city(string city)
;...{
;string temp = null;
;try
;...{
;string strURL =
;"http://weather.news.sina.com.cn/cgi-bin/figureWeather/search.cgi";
;HttpWebRequest request;
;request = (HttpWebRequest)WebRequest.Create(strURL);
;request.Method="POST"//Post请求方式
;request.ContentType="application/x-www-form-urlencoded"//内容类型
;string paraUrlCoded = System.Web.HttpUtility.UrlEncode("city");
;//参数经过URL编码
;paraUrlCoded = paraUrlCoded + "=" +
;System.Web.HttpUtility.UrlEncode(city,
;System.Text.Encoding.GetEncoding("GB2312"));
;byte[] payload;
;payload =
;System.Text.Encoding.GetEncoding("GB2312").GetBytes(paraUrlCoded);
;//将URL编码后的字符串转化为字节
;request.ContentLength = payload.Length; //设置请求的ContentLength
;Stream writer = request.GetRequestStream(); //获得请求流
;writer.Write(payload,0,payload.Length); //将请求参数写入流
;writer.Close(); //关闭请求流
;HttpWebResponse response;
;response = (HttpWebResponse)request.GetResponse(); //获得响应流
;Stream s;
;s = response.GetResponseStream();
;StreamReader objReader = new
;StreamReader(s,System.Text.Encoding.GetEncoding("GB2312"));
;string HTML = "";
;string sLine = "";
;int i = 0;
;while (sLine!=null)
;...{
;i++;
;sLine = objReader.ReadLine();
;if (sLine!=null)
;HTML += sLine;
;}
;HTML = HTML.Replace("&lt;","<");
;HTML = HTML.Replace("&gt;",">");
;int start,stop;
;start = HTML.IndexOf("<img
;src="http://image2.sina.com.cn/dy/weather/images/figure/",0,HTML.Length);
;stop = HTML.IndexOf("<td
;background=http://image2.sina.com.cn/dy/weather/images",start);
;temp = HTML.Substring(start, stop - start);
;}
;catch (Exception x)
;...{
;}
;return temp;
;}
;}

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