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ASP.net (c #) creates a 24-hour Weather Forecast and real-time weather

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Author: User
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This article describes ASP. NET real-time weather and 24-hour Weather Forecast in detail.
Modify the url to obtain the topic of the article about weather conditions in other cities.


ASP. NET real-time weather and 24-hour Weather Forecast (C #)
Modify the url to obtain the weather conditions of other cities.
For example, Guangzhou:
Http://weather.yahoo.com
/Forecast/CHXX0037_c.html
Note: Only applicable to weather forecasts on yahoo
GetWeather. aspx
-----------------------------------

Copy codeThe Code is as follows: <% @ 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 = "">
<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 = "weatsp2" runat = "server"> 24-hour Weather </asp: Label> </P>
<P>
<Asp: Button id = "btnGet2" runat = "server" Text = "Weather Forecast">
</Asp: Button> </P>
</FONT>
</Form>
</Body>
</HTML>
GetWeather. aspx. cs
---------------------------------------

Copy codeThe Code is as follows: 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 ("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;
}
}
} Please note

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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