Google Map 根据坐标 获取地址信息

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Xml;
 using System.Net;

 namespace Utility
 {
     public class GoogleMapHelper
     {
         public string GetAddress(string lat, string lng)
         {
             WebClient client = new WebClient();
             string url = string.Format("http://maps.google.com/maps/api/geocode/xml?latlng={0},{1}&language=zh-CN&sensor=false", lat, lng);
             client.Encoding = Encoding.UTF8;
             try
             {
                 string responseTest = client.DownloadString(url);
                 XmlDocument doc = new XmlDocument();

                 if (!string.IsNullOrEmpty(responseTest))
                 {
                     doc.LoadXml(responseTest);

                     string xpath = @"GeocodeResponse/status";
                     XmlNode node = doc.SelectSingleNode(xpath);
                     string status = node.InnerText.ToString();

                     if (status == "OK")
                     {
                         xpath = @"GeocodeResponse/result/formatted_address";
                         node = doc.SelectSingleNode(xpath);
                         string address = node.InnerText.ToString();
                         return address;
                     }
                 }
             }
             catch
             {
             }
             return "";
         }
     }
 }