C#通过Google Map获取给定地名的经纬度值

改写了一个方便的获取经纬度信息的类Geo，其中Latitude和Longtitude分别是纬度和经度。其中最重要的构造函数就是传入地名，通过Webrequest从Google Map获得经纬度值，在含有地理位置信息的项目里可以很方便的调用，即Geo g = new Geo("北京师范大学");然后g.Latitude和g.Longtitude就是北京师范大学的纬度和经度了，它们分别是39.9614580，116.3692820。Geo的实现如下：

using System; using System.Collections.Generic; using System.Text; using System.Net; using System.IO; namespace 获取经纬度 { /// /// a class for latitude and longtitude /// [Serializable] public class Geo { /// /// latitude /// private string _latitude = ""; /// /// longtitude /// private string _longtitude = ""; /// /// default constructor /// public Geo() { } /// /// construct geo given latitude and longtitude /// public Geo(string latitude, string longtitude) { _latitude = latitude; _longtitude = longtitude; } /// /// construct geo given name of a place /// public Geo(string location) { string output = "csv"; string url = string.Format("http://maps.google.com/maps/geo?q={0}&output={1}", location, output); try { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) { using (StreamReader sr = new StreamReader(response.GetResponseStream())) { string[] tmpArray = sr.ReadToEnd().Split(','); _latitude = tmpArray[2]; _longtitude = tmpArray[3]; } } } catch (System.Net.Sockets.SocketException ex) { Console.WriteLine("网络中断"); } catch (Exception ex) { //throw ex; Console.WriteLine("异常类型：{0}", ex.GetType()); Console.WriteLine("异常信息：{0}", ex.Message); Console.WriteLine("异常来源：{0}", ex.Source); Console.WriteLine("异常堆栈：{0}", ex.StackTrace); Console.WriteLine("内部异常：{0}", ex.InnerException); } } /// /// get latitude /// public string Latitude { get { return _latitude; } set { _latitude = value; } } /// /// get longtitude /// public string Longtitude { get { return _longtitude; } set { _longtitude = value; } } } }