/// <summary>

         /// 获取天气预报信息

         /// </summary>

         /// <returns></returns>

         public BaiduTQ GetWeather()

         {

             // GetCity()获得的信息解析后，填充丰台部分

             string url = @"http://api.map.baidu.com/telematics/v3/weather?location=丰台&output=json&ak=hXWAgbsCC9UTkBO5V5Qg1WZ9";

             HttpWebRequest webRequest = HttpWebRequest.Create(url) as HttpWebRequest;

             webRequest.Method = "GET";

             webRequest.ContentType = "text/html";

             using(StreamReader sr = new StreamReader(webRequest.GetResponse().GetResponseStream()))

             {

                string str =  sr.ReadToEnd();

                BaiduTQ b = JsonConvert.DeserializeObject<BaiduTQ>(str);

                return b;

             }

         }

 public class BaiduTQ

     {

         public int error { get; set; }

         public string status { get; set; }

         public string date { get; set; }

         public List<BaiduResult> results { get; set; }

     }

     public class BaiduResult

     {

         public string currentCity { get; set; }

         public string pm25 { get; set; }

         public List<BaiduIndex> index { get; set; }

         public List<BaiDuWeaterData> weather_data { get; set; }

     }

     public class BaiduIndex

     {

         public string title { get; set; }

         public string zs { get; set; }

         public string tipt { get; set; }

         public string des { get; set; }

     }

     public class BaiDuWeaterData

     {

         public string date { get; set; }

         public string dayPictureUrl { get; set; }

         public string nightPictureUrl { get; set; }

         public string weather { get; set; }

         public string wind { get; set; }

         public string temperature { get; set; }

     }

BaiduTQ

  /// <summary>

         /// 根据ip获取城市信息

         /// </summary>

         /// <returns>ip所在城市信息</returns>

         private string GetCity()

         {

             IPAddress ip = this.GetIPAddress();

             if (ip == null) return null;

             using (var client = new WebClient())

             {

                 var url = "http://ip.taobao.com/service/getIpInfo.php?ip=" + ip;

                 client.Encoding = Encoding.UTF8;

                 var str = client.DownloadString(url);

                 return str;

             }

         }

 /// <summary>

         /// 获取本地ip地址

         /// </summary>

         /// <returns></returns>

         private IPAddress GetIPAddress()

         {

             IPAddress[] arrIPAddresses = Dns.GetHostAddresses(Dns.GetHostName());

             foreach (IPAddress ip in arrIPAddresses)

             {

                 if (ip.AddressFamily.Equals(AddressFamily.InterNetwork))

                 {

                     return ip;

                 }

             }

             return null;

         }