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The author:(作者)归海一刀published in(发表于) 2014/1/30 1:00:24 ASP.NET的实时天气及24小时天气预报(C#)_[Asp.Net教程]
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" %> getweather weather 24小时天气
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("",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");
streamreader objreader = new streamreader(s,system.text.encoding.getencoding("gb2312"));
stop = html.indexof("",start)+8;
temp = html.substring(start, stop - start); weather2.text = temp; } } }
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