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ASP.NET的實時天氣及24小時天氣預(yù)報(C#)

發(fā)表時間：2024-02-15 來源：明輝站整理相關(guān)軟件相關(guān)文章人氣：

[摘要]ASP.NET的實時天氣及24小時天氣預(yù)報(C#) 修改其中的url獲得其他城市的天氣情況 如廣州為： http://weather.yahoo.com/forecast/CHXX0037_c.html 注意僅適用于獲得yahoo上的天氣預(yù)報 GetWeather.aspx -----------...

 ASP.NET的實時天氣及24小時天氣預(yù)報(C#) 修改其中的url獲得其他城市的天氣情況
如廣州為：
http://weather.yahoo.com/forecast/CHXX0037_c.html
注意僅適用于獲得yahoo上的天氣預(yù)報


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="宋體">
                <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小時天氣</asp:Label></P>
                <P>
                    <asp:Button id="btnGet2" runat="server" Text="天氣預(yù)報"></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;        
        }
    }
} 

 
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