所以我们要添加web引用共两个 1.根据IP地址获取你所在城市（假如没有这个，而直接引用相关网站提供的webservice，你所在的地点可能不是很准确，假如，你用了路由器....等，不知道大家是有同感）
2.根据上一部获取的城市，调用获取天气数据的webservice
贴取部分代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.ServiceModel;
using System.Runtime.InteropServices;
namespace MyWeather
{
public partial class Form1 : Form
{
string myip,mycity;
private double opacity = 0;//记录当前窗体的透明度
//实现无边框移动
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_MOVE = 0xF010;
public const int HTCAPTION = 0x0002;
//实现无边框移动
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
Opacity = 0;//指定窗体完全透明
GetIP();
GetCityByIP(myip);
DisplayWeather();
}
protected void GetIP()
{
try
{
string strUrl = "http://www.ip138.com/ip2city.asp"; //获得IP的网址
Uri uri = new Uri(strUrl);
System.Net.WebRequest wr = System.Net.WebRequest.Create(uri);
System.IO.Stream s = wr.GetResponse().GetResponseStream();
System.IO.StreamReader sr = new System.IO.StreamReader(s, Encoding.Default);
string all = sr.ReadToEnd(); //读取网站的数据
int i = all.IndexOf("[") + 1;
string tempip = all.Substring(i, 15);
string ip = tempip.Replace("]", "").Replace(" ", "");//找出i
myip = ip;
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
protected void GetCityByIP(string myip)
{
IPCity.IpAddressSearchWebService city = new IPCity.IpAddressSearchWebService();
string[] ss = city.getCountryCityByIp(myip);
int n = ss[1].IndexOf(' ');//空格所在位置
int m = ss[1].IndexOf('省');//ss[1]的实际内容是XX省 XX市，而获取天气的webservice只需要知道是某个市不需要知道省，所以截取了XX市
int x = n - m;
mycity = ss[1].Substring(m+1,x-2);
}
protected void DisplayWeather()
{
webxml.WeatherWebService w = new webxml.WeatherWebService();
//把webservice当做一个类来操作
string[] s = new string[23];//声明string数组存放返回结果
s = w.getWeatherbyCityName(mycity);
if (s[8] == "")
{
MessageBox.Show("暂时不支持您查询的城市");
}
else
{
string png = s[8].Substring(0, s[8].Length - 4);
string png2 = s[15].Substring(0, s[15].Length - 4);
string png3 = s[20].Substring(0, s[20].Length - 4);
string path = Application.StartupPath;
pictoday.Image = Image.FromFile(path+"\\images\\"+png+".png");
pic1.Image = Image.FromFile(path + "\\images\\" + png + ".png");
pic2.Image = Image.FromFile(path + "\\images\\" + png2 + ".png");
pic3.Image = Image.FromFile(path + "\\images\\" + png3 + ".png");
this.lbl1.Text = s[5].ToString();
this.lbl2.Text = s[12].ToString();
this.lbl3.Text = s[17].ToString();
this.time.Text = s[4].ToString();
this.address.Text = s[1].ToString();
this.temperature.Text = s[5].ToString();
this.label4.Text = s[6].Substring(s[6].IndexOf('日')+1).ToString();
this.label5.Text = s[7].ToString();
this.tempo1.Text = s[6].Substring(s[6].IndexOf('日')+1);
this.tempo2.Text = s[13].Substring(s[13].IndexOf('日')+1);
this.tempo3.Text = s[18].Substring(s[18].IndexOf('日')+1);
}
}
//实现无边框移动
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
ReleaseCapture();
SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
}
private void timer1_Tick(object sender, EventArgs e)
{
if (opacity <= 1)
{
opacity = opacity + 0.05;
Opacity = opacity;
}
}
}
}
源码下载 安装使用（安装的时候一路默认，改变安装路径，请您试试把，成功的话那皆大欢喜）
喜欢的支持下哈，当然你可以增加功能，美化该小工具，请一定要告诉我哈
