ASP.NET的实时天气及24小时天气预报
网上找到的 运行一下 点击第一个按钮出现StartIndex 不能小于 0。
参数名: startIndex
点击第二个按钮出现远程服务器返回错误: (404) 未找到。
由于从没做过所以也不明白是怎么回事 希望大家给看一下
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.
<html xmlns="http://www. >
<head runat="server">
<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.
</head>
<body>
<form id="form1" 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" OnClick="btnGet_Click2"></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>
using System;
using System.Collections;
using
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
using
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the 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
protected void btnGet_Click(object sender, EventArgs e)
{
WebRequest wreq = WebRequest.Create("http://weather.);
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;
}
protected void btnGet2_Click(object sender, EventArgs e)
{
WebRequest wreq=WebRequest.Create("http://cn.weather.);
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;
}
}
