ASP.NET实现24小时实时天气预报(C#)
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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)); www.come on babychinai tp ow er.comhOiyFdG 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; www.come on babychinai tp ow er.comhOiyFdG temp = HTML.Substring(start, stop - start); Weather2.Text = temp; } } } |
