ASP.NET的实时天气及24小时天气预报(C#)

",start);

string img = temp.Substring(start,stop - start);
lblWeather.Text = degree + "
" + 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("

▲ASP.NET的实时天气及24小时天气预...... 　　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" %> Weather 24小时天气 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); } /// /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// 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("",0,HTML.Length); stop = HTML.IndexOf("",0,HTML.Length); temp = HTML.Substring(start, stop - start); start = temp.IndexOf(""); stop = temp.IndexOf(""); string degree = temp.Substring(start+3,stop - start -3); start = temp.IndexOf(" stop = temp.IndexOf("

",0,HTML.Length);

stop = HTML.IndexOf("",start)+8;


temp = HTML.Substring(start, stop - start);
Weather2.Text = temp;
}
}
}