c#获取中国城市天气编号代码

代码写得有点久了，好像由于天气预报接口需要中国省市编码号，我就一气之下，写了些代码，将中国天气网天气预报中出现的省、市、县爬取下来，数据还在我数据库中，谁想要可以留言，我可以发到他/她邮箱中。（别惹学技术的，尤其是学习生化技术的，比计算机可怕多了。）
winform界面太丑，就不传图了，直接贴代码（代码好像不全，当时我删删减减，好像搞到很晚才睡，印象比较深刻，不过理解如何爬取网页，如何处理xml数据，如何存到sqlserver中就行了。其实是我懒得再读一遍代码了）：

using System;
using System.Data;
using System.Linq;
using System.Net;
using System.Text;
using System.Windows.Forms;
using System.Xml;

namespace Study
{
public partial class WebInfoXML : Form
{
public WebInfoXML()
{
InitializeComponent();
}

//获取网页信息
private string GetWebInfo(string url)
{
WebClient client = new WebClient();
byte[] pageData = client.DownloadData(url);
string pageHtml = Encoding.UTF8.GetString(pageData); //注意编码格式
return pageHtml;
}

//从http://flash.weather.com.cn/wmaps/xml/china.xml获取省份信息
private void btn_GetP_Click(object sender, EventArgs e)
{
#region  插入Province表中国省份信息代码
//richTextBox1.Text = "";
//string url = @"http://flash.weather.com.cn/wmaps/xml/china.xml";
//string str = GetWebInfo(url);
//richTextBox1.Text = str;
//XmlDocument xd = new XmlDocument();
////加载xml文件流
//xd.LoadXml(str);

////节点
//XmlNode xn = xd.DocumentElement;
////第一个节点的值
//string s = xn.ChildNodes[0].Attributes.ToString();
////根节
//string b = xd.FirstChild.Name;
////节点的数量
//int count = xn.ChildNodes.Count;

////特定节点的属性
//foreach (XmlNode node in xn.ChildNodes)
//{
//    XmlElement xe = (XmlElement)node;
//    string name = xe.GetAttribute("quName");
//    string pinyin = xe.GetAttribute("pyName");
//    try
//    {

//        Province pro = new Province();
//        pro.P_Name = name;
//        pro.P_Pinyin = pinyin;
//        DataInformationDataContext dc = new DataInformationDataContext();
//        dc.Province.InsertOnSubmit(pro);
//        dc.SubmitChanges();
//    }
//    catch (Exception ex)
//    {

//        //MessageBox.Show(ex.Message); ;
//    }

//}
//MessageBox.Show(b);
#endregion
}

//获取市区信息
private void btn_GetM_Click(object sender, EventArgs e)
{
#region 获取所有市区信息存到表Municipality
//DataInformationDataContext dc = new DataInformationDataContext();
//var urlname = from u in dc.Province select u.P_Pinyin;
//foreach (var item in urlname)
//{
//    string url = @"http://flash.weather.com.cn/wmaps/xml/" + item.Trim() + ".xml";
//    string str = GetWebInfo(url);
//    if (!str.Contains("网页无法访问"))
//    {
//        //读取xml数据流
//        XmlDocument xd = new XmlDocument();
//        xd.LoadXml(str);

//        //节点
//        XmlNode xn = xd.DocumentElement;
//        //根节点的值
//        string root = xd.FirstChild.Name;
//        //找到Province表中P_ID的值。
//        var pname = from p in dc.Province where p.P_Pinyin == root select p;
//        int id = pname.FirstOrDefault().P_ID;
//        foreach (XmlNode node in xn.ChildNodes)
//        {
//            XmlElement xe = (XmlElement)node;
//            string name = xe.GetAttribute("cityname");
//            string pinyin = xe.GetAttribute("pyName");
//            Municipality mu = new Municipality();
//            mu.M_Name = name;
//            mu.M_Pinyin = pinyin;
//            mu.P_ID = id;
//            DataInformationDataContext di = new DataInformationDataContext();
//            di.Municipality.InsertOnSubmit(mu);
//            di.SubmitChanges();
//        }
//        richTextBox1.Text = id.ToString();
//    }
//    else
//    {
//        continue;
//    }
//}
//MessageBox.Show("已经完成了");
#endregion
}

//获取县信息
private void btn_GetC_Click(object sender, EventArgs e)
{
#region 将县信息存到数据库中
DataInformationDataContext dc = new DataInformationDataContext();
var urlname = from u in dc.Municipality select u.M_Pinyin;
foreach (var item in urlname)
{
string url = @"http://flash.weather.com.cn/wmaps/xml/" + item.Trim() + ".xml";
string str = GetWebInfo(url);
if (!str.Contains("网页无法访问"))
{
//读取xml数据流
XmlDocument xd = new XmlDocument();
xd.LoadXml(str);

//节点
XmlNode xn = xd.DocumentElement;
//根节点的值
string root = xd.FirstChild.Name;
//找到Municipality表中M_ID的值。
var mname = from m in dc.Municipality where m.M_Pinyin == root select m;
int id = mname.FirstOrDefault().M_ID;
foreach (XmlNode node in xn.ChildNodes)
{
XmlElement xe = (XmlElement)node;
string name = xe.GetAttribute("cityname");
string pinyin = xe.GetAttribute("pyName");
County county = new County();
county.M_ID = id;
county.C_Name = name;
county.C_Pinyin = pinyin;
DataInformationDataContext di = new DataInformationDataContext();
di.County.InsertOnSubmit(county);
di.SubmitChanges();
}
//richTextBox1.Text = id.ToString();
}
else
{
continue;
}
}
MessageBox.Show("完成了！");
#endregion
}

private void button1_Click(object sender, EventArgs e)
{
//string path = @"E:\C#_Code\Winform\Study\Study\XML\WeatherInfo.xml";
//XmlDocument xd = new XmlDocument();
//xd.Load(path);
//XmlNode xn = xd.DocumentElement;

////存到Province表中
//XmlNodeList no = xd.GetElementsByTagName("province");
//foreach (XmlNode item in no)
//{
//    string id = item.Attributes["id"].Value;
//    string name = item.Attributes["name"].Value;
//    try
//    {
//        Provinces pro = new Provinces();
//        pro.ID = id;
//        pro.Name = name;
//        pro.Nation_ID = "1";
//        DataAreaDataContext da = new DataAreaDataContext();
//        da.Provinces.InsertOnSubmit(pro);
//        da.SubmitChanges();
//    }
//    catch (Exception)
//    {

//        throw;
//    }
//    //richTextBox1.Text += id + name + "\n";
//}
//MessageBox.Show(no.Count.ToString());

////存到City表中
//XmlNodeList c = xd.GetElementsByTagName("city");
//foreach (XmlNode item in c)
//{
//    string id = item.Attributes["id"].Value;
//    string name = item.Attributes["name"].Value;
//    Citys citys = new Citys();
//    citys.ID = id;
//    citys.Name = name;
//    DataAreaDataContext da = new DataAreaDataContext();
//    da.Citys.InsertOnSubmit(citys);
//    da.SubmitChanges();
//    //richTextBox1.Text += id + name + "\n";
//}
//MessageBox.Show(c.Count.ToString());
////存到County表中
//XmlNodeList co = xd.GetElementsByTagName("county");
//foreach (XmlNode item in co)
//{
//    string id = item.Attributes["id"].Value;
//    string name = item.Attributes["name"].Value;
//    string weaId = item.Attributes["weatherCode"].Value;
//    Countys cou = new Countys();
//    cou.ID = id;
//    cou.Name = name;
//    cou.WeatherCode = weaId;
//    DataAreaDataContext da = new DataAreaDataContext();
//    da.Countys.InsertOnSubmit(cou);
//    da.SubmitChanges();
//}
//MessageBox.Show(co.Count.ToString());
}
}
}