获取天气预报代码_天气位置代码

1.谁有根据IP显示天气预报的代码啊?要一行字的

2.最好的网页天气预报代码（自动定制城市天气）

3.VB 怎么实现点击按钮自动获取天气预报

4.求～一行天气预报代码（附参考站）

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Net;

using System.IO;

using System.Collections;

/// <summary>

/// Weather 的摘要说明

/// </summary>

public class Weather

{

public Weather()

{

//

// TODO: 在此处添加构造函数逻辑

//

}

public static string ConvertCodeByCity(string City)

{

string Code = "";

switch (City)

{

case "北京":

Code = "110100";

break;

default:

break;

}

return Code;

}

public static ArrayList GetWeather(string code)

{

/*

[0] "北京 "string

[1] "雷阵雨 "string

[2] "9℃" string

[3] "29℃"string

[4] "小于3级"string

*/

string html = "";

try

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("" + code + "_w.html ");

request.Method = "Get";

//request.Timeout = 1;

request.ContentType = "application/x-www-form-urlencoded ";

WebResponse response = request.GetResponse();

Stream s = response.GetResponseStream();

StreamReader sr = new StreamReader(s, System.Text.Encoding.GetEncoding("GB2312"));

html = sr.ReadToEnd();

s.Close();

sr.Close();

}

catch (Exception err)

{

throw new Exception("访问地址出错~~~ ");

}

int count = html.Length;

int starIndex = html.IndexOf("<table ", 0, count);

int endIndex = html.IndexOf("</table>", starIndex, count - starIndex);

html = html.Substring(starIndex, endIndex - starIndex + 8);

//得到城市

int cityStartIndex = html.IndexOf("<b>", 0, html.Length);

int cityEndIndex = html.IndexOf("</b>", 0, html.Length);

string City = html.Substring(cityStartIndex + 3, cityEndIndex - cityStartIndex - 3);

//得到天气

int weatherStartIndex = html.IndexOf("<b>", cityEndIndex);

int weatherEndIndex = html.IndexOf("</b>", weatherStartIndex);

string Weather = html.Substring(weatherStartIndex + 3, weatherEndIndex - weatherStartIndex - 3);

//得到温度

int temperatureStartIndex = html.IndexOf("<b", weatherEndIndex);

int temperatureEndIndex = html.IndexOf("</b>", weatherEndIndex + 3);

string Temperature = html.Substring(temperatureStartIndex + 21, temperatureEndIndex - temperatureStartIndex - 21);

int int1 = Temperature.IndexOf("℃", 0);

int int2 = Temperature.IndexOf("～", 0);

int int3 = Temperature.IndexOf("℃", int2);

string MinTemperature = Temperature.Substring(int2 + 1, int3 - int2);

string MaxTemperature = Temperature.Substring(0, int2 - int1 + 2);

//得到风力

int windforceStartIndex = html.IndexOf("风力：", temperatureEndIndex);

int windforceEndIndex = html.IndexOf("<br>", windforceStartIndex);

string Windforce = html.Substring(windforceStartIndex + 3, windforceEndIndex - windforceStartIndex - 3);

if (Windforce.Contains("小于") && (!Windforce.Contains("等于"))) //判断风力是否含有"小于"或"小于等于"字样将,如果有的话，将其替换为2-

{

//Windforce = Windforce.Replace("小于", "2-");

string strWindforce = Windforce.Substring(2, Windforce.Length - 3);

int minWindforce = Int32.Parse(strWindforce) - 1;

Windforce = Windforce.Replace("小于", minWindforce.ToString() + "-");

}

else if (Windforce.Contains("小于等于"))

{

string strWindforce = Windforce.Substring(4, Windforce.Length - 5);

int minWindforce = Int32.Parse(strWindforce) - 1;

Windforce = Windforce.Replace("小于等于", minWindforce.ToString() + "-");

}

ArrayList al = new ArrayList();

al.Add(City);

al.Add(Weather);

al.Add(MinTemperature);

al.Add(MaxTemperature);

al.Add(Windforce);

return al;

}

}

谁有根据IP显示天气预报的代码啊?要一行字的

直接使用插件，如

<iframe width="214" scrolling="no" height="54" frameborder="0" allowtransparency="true" src=""></iframe>

效果如下

这个插件来源是 style="font-size: 18px;font-weight: bold;border-left: 4px solid #a10d00;margin: 10px 0px 15px 0px;padding: 10px 0 10px 20px;background: #f1dada;">最好的网页天气预报代码（自动定制城市天气）

第一款

<iframe src="" width="334" height="23" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" name="I2" align="middle">

</iframe> 可自定城市

第二款

<iframe src="" frameborder="0" width="160" height="15" marginheight="0" marginwidth="0" scrolling="no"></iframe> 一行字

VB 怎么实现点击按钮自动获取天气预报

这是你想要的天气预报代码，由中央气象台提供数据，最准确最权威的天气预报，能够根据访客不同的IP地址显示不同城市的天气预报

下面是源程序代码：

<iframe src="" width="160" height="60" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>

求～一行天气预报代码（附参考站）

为了方便，文本框改成数组控件。代码中用北京作为天气预报地点，改的话将网址改下即可，具体方法可以百度。另外，新浪天气预报只有4天。最后说明一下，除了标签和文本框，没用其它控件。

发送到这个网站的一个网址，会自动返回此城市的天气信息。对此信息再格式化就好了。

发送：广州

返回：b4.gif^广州^雷阵雨^26℃ ～ 22℃^微风^紫外线:弱

发送：上海

返回：b3.gif^上海^阵雨转阴^16℃ ～ 13℃^东南风3-4级^紫外线:最弱

至于如何判断访问者是哪一个城市，需要分析其IP地址然后再加判断吧，你到网上找个IP转城市的数据库看看。