#region 根据ip获取地点

         /// 获取Ip归属地

         /// </summary>

         /// <param name="ip">ip</param>

         /// <returns>归属地</returns>

         public static string GetIpAddress(string ip)

         {

             JavaScriptSerializer Jss = new JavaScriptSerializer();

             //http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=218.18.171.146 调用新浪的接口

             //var remote_ip_info = {"ret":1,"start":-1,"end":-1,"country":"\u4e2d\u56fd","province":"\u5e7f\u4e1c","city":"\u6df1\u5733","district":"","isp":"","type":"","desc":""};

             string address = string.Empty;

             try

             {

                 string reText = WebRequestPostOrGet("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip="+ip, "");

                 reText = reText.Split('=')[].Split(';')[].Trim();

                 Dictionary<string, object> DicText = (Dictionary<string, object>)Jss.DeserializeObject(reText);

                 address = DicText["city"].ToString();

             }

             catch { }

             return address;

         }

         #endregion

         #region Post/Get提交调用抓取

         /// <summary>

         /// Post/get 提交调用抓取

         /// </summary>

         /// <param name="url">提交地址</param>

         /// <param name="param">参数</param>

         /// <returns>string</returns>

         public static string WebRequestPostOrGet(string sUrl, string sParam)

         {

             byte[] bt = System.Text.Encoding.UTF8.GetBytes(sParam);

             Uri uriurl = new Uri(sUrl);

             HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(uriurl);//HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url + (url.IndexOf("?") > -1 ? "" : "?") + param);

             req.Method = "Post";

             req.Timeout =  * ;

             req.ContentType = "application/x-www-form-urlencoded;";

             req.ContentLength = bt.Length;

             using (Stream reqStream = req.GetRequestStream())//using 使用可以释放using段内的内存

             {

                 reqStream.Write(bt, , bt.Length);

                 reqStream.Flush();

             }

             try

             {

                 using (WebResponse res = req.GetResponse())

                 {

                     //在这里对接收到的页面内容进行处理 

                     Stream resStream = res.GetResponseStream();

                     StreamReader resStreamReader = new StreamReader(resStream, System.Text.Encoding.UTF8);

                     string resLine;

                     System.Text.StringBuilder resStringBuilder = new System.Text.StringBuilder();

                     while ((resLine = resStreamReader.ReadLine()) != null)

                     {

                         resStringBuilder.Append(resLine + System.Environment.NewLine);

                     }

                     resStream.Close();

                     resStreamReader.Close();

                     return resStringBuilder.ToString();

                 }

             }

             catch (Exception ex)

             {

                 return ex.Message;//url错误时候回报错

             }

         }

         #endregion Post/Get提交调用抓取