GetWeather.aspx
<%@ Page language=c# Codebehind=GetWeather.aspx.cs AutoEventWireup=false Inherits=test.GetWeather %
<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN
<HTML
<HEAD
<titleGetWeather</title
<meta name=GENERATOR Content=Microsoft Visual Studio 7.0
<meta name=CODE_LANGUAGE Content=C#
<meta name=vs_defaultClientScript content=javascript
<meta name=vs_targetSchema content=http://schemas.microsoft.com/intellisense/ie5
</HEAD
<body
<form id=GetWeather method=post runat=server
<FONT face=宋体
<P
<asp:Label id=lblWeather runat=serverWeather</asp:Label</P
<P
<asp:Button id=btnGet runat=server Text=Get Weather</asp:Button</P
<P
<asp:Label id=Weather2 runat=server24小时天气</asp:Label</P
<P
<asp:Button id=btnGet2 runat=server Text=天气预报</asp:Button</P
</FONT
</form
</body
</HTML
getWeather.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
namespace test
{
public class GetWeather : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label lblWeather;
protected System.Web.UI.WebControls.Label Weather2;
protected System.Web.UI.WebControls.Button btnGet2;
protected System.Web.UI.WebControls.Button btnGet;
private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/// <summary
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary
private void InitializeComponent()
{
this.btnGet.Click += new System.EventHandler(this.btnGet_Click);
this.btnGet2.Click += new System.EventHandler(this.btnGet2_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void btnGet_Click(object sender, System.EventArgs e)
{
WebRequest wreq=WebRequest.Create(http://weather.yahoo.com/forecast/CHXX0037_c.html);
HttpWebResponse wresp=(HttpWebResponse)wreq.GetResponse();
string HTML =;
Stream s=wresp.GetResponseStream();
StreamReader objReader = new StreamReader(s);
string sLine = ;
int i = 0;
while (sLine!=null)
{
i++;
sLine = objReader.ReadLine();
if (sLine!=null)
HTML += sLine;
}
String temp= ;
int start,stop;
start = HTML.IndexOf(<!-- CURCON--,0,HTML.Length);
stop = HTML.IndexOf(<!-- END CURCON--,0,HTML.Length);
temp = HTML.Substring(start, stop - start);
start = temp.IndexOf(<b);
stop = temp.IndexOf(</b);
string degree = temp.Substring(start+3,stop - start -3);
start = temp.IndexOf(<img);
stop = temp.IndexOf(</td,start);
string img = temp.Substring(start,stop - start);
lblWeather.Text = degree + <br + img;
}
private void btnGet2_Click(object sender, System.EventArgs e)
{
WebRequest wreq=WebRequest.Create(http://cn.weather.yahoo.com/CHXX/CHXX0037/index_c.html);
HttpWebResponse wresp=(HttpWebResponse)wreq.GetResponse();
string HTML =;
Stream s=wresp.GetResponseStream();
StreamReader objReader = new StreamReader(s,System.Text.Encoding.GetEncoding(GB2312));
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string sLine = ;
int i = 0;
while (sLine!=null)
{
i++;
sLine = objReader.ReadLine();
if (sLine!=null)
HTML += sLine;
}
String temp= ;
int start,stop;
start = HTML.IndexOf(<table border=0 cellpadding=2 cellspacing=1 bgcolor=9999cc width=\\85%\\,0,HTML.Length);
stop = HTML.IndexOf(</table,start)+8;
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temp = HTML.Substring(start, stop - start);
Weather2.Text = temp;
}
}
}
