ASP.NET的實(shí)時(shí)天氣及24小時(shí)天氣預(yù)報(bào)_.Net教程
      
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      推薦：在ASP.NET中進(jìn)行文件處理(1)
      一種程序設(shè)計(jì)語(yǔ)言，對(duì)文件處理的能力的大小往往也是一種語(yǔ)言功能大小的一種表現(xiàn)。在ASP.NET中，對(duì)于文件的處理主要是通過(guò).Net FrameWork SDK中的一個(gè)System.IO的名稱空間來(lái)實(shí)現(xiàn)了，在System.IO
      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(bào)
         
         
      


      

    

        
      

            以下為引用的內(nèi)容：
        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(shí)天氣</asp:Label></P> 
         <P> 
         <asp:Button id="btnGet2" runat="server" Text="天氣預(yù)報(bào)"></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; 
         } 
         } 
        }       		

        
      

          


      


      分享：帶你走進(jìn)ASP.NET(2)
      C#語(yǔ)言是微軟公司針對(duì).Net平臺(tái)開(kāi)發(fā)的一種全新的編程語(yǔ)言。盡管C#象是C，和C  語(yǔ)言的升級(jí)語(yǔ)言，但是他不象他的前身那樣，C#是一個(gè)完全面相對(duì)象的開(kāi)發(fā)語(yǔ)言。它既有Visual Basic的快速開(kāi)發(fā)的特點(diǎn)，
      


      

      


      來(lái)源：模板無(wú)憂//所屬分類：.Net教程/更新時(shí)間：2008-08-22


      


      



      


      



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