您的位置：首页 > 编程语言 > ASP

ASP.net(c#)打造24小时天气预报及实时天气

2006-12-22 00:00 786 查看

本文详细介绍关于ASP.NET的实时天气及24小时天气预报
修改其中的url获得其他城市的天气情况的文章专题。
ASP.NET的实时天气及24小时天气预报(C#)
修改其中的url获得其他城市的天气情况
如广州为： http://weather.yahoo.com
/forecast/CHXX0037_c.html
注意仅适用于获得yahoo上的天气预报
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>   
<title>GetWeather</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="server">Weather</asp:Label></P>   
<P>   
<asp:Button id="btnGet" runat="server" Text="Get Weather">  
</asp:Button></P>   
<P>   
<asp:Label id="Weather2" runat="server">24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"));   
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;   
temp = HTML.Substring(start, stop - start);   
Weather2.Text = temp;   
}   
}   
}

请注明转自chinazhan中国站长

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航