Get a user's geographic location based on IP

The major websites are provided according to the IP to obtain the user's geographical location information, here to Sina's interface as an example

The interface address is: http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=218.18.171.146

Code:

1         #regionGet locations based on IP2         ///Get IP Attribution3         /// </summary>4         /// <param name= "IP" >IP</param>5         /// <returns>Place of Attribution</returns>6          Public Static stringGetipaddress (stringIP)7         {8JavaScriptSerializer Jss =NewJavaScriptSerializer ();9             //Http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=218.18.171.146 call Sina's interfaceTen             //var remote_ip_info = {"ret": 1, "Start":-1, "End":-1, "Country": "\u4e2d\u56fd", "Province": "\u5e7f\u4e1c", "City": " \u6df1\u5733 "," District ":" "," ISP ":" "," type ":" "," desc ":"}; One             stringAddress =string. Empty; A             Try -             { -                 stringRetext = Webrequestpostorget ("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip="+ip,""); theRetext = Retext.split ('=')[1]. Split (';')[0]. Trim (); -dictionary<string,Object> Dictext = (dictionary<string,Object>) Jss.deserializeobject (retext); -Address = dictext[" City"]. ToString (); -             } +             Catch { } -             returnaddress; +         } A         #endregion

View Code

One of the Webrequestpostorget methods:

1         #regionPost/get Commit Call Fetch2         /// <summary>3         ///Post/get commit call Fetch4         /// </summary>5         /// <param name= "url" >Submit Address</param>6         /// <param name= "param" >Parameters</param>7         /// <returns>string</returns>8          Public Static stringWebrequestpostorget (stringsURL,stringSParam)9         {Ten             byte[] bt =System.Text.Encoding.UTF8.GetBytes (sParam); One  AUri Uriurl =NewUri (surl); -HttpWebRequest req = (HttpWebRequest) httpwebrequest.create (Uriurl);//HttpWebRequest req = (HttpWebRequest) httpwebrequest.create (url + (URL). IndexOf ("?") >-1? "" : "?") + param); -Req. Method ="Post"; theReq. Timeout = -* +; -Req. ContentType ="application/x-www-form-urlencoded;"; -Req. ContentLength =BT. Length; -  +             using(Stream Reqstream = req. GetRequestStream ())//Using use can release memory within a using segment -             { +Reqstream.write (BT,0, Bt. Length); A Reqstream.flush (); at             } -             Try -             { -                 using(WebResponse res =req. GetResponse ()) -                 { -                     //handle the content of the received page here in  -Stream Resstream =Res. GetResponseStream (); to  +StreamReader Resstreamreader =NewStreamReader (Resstream, System.Text.Encoding.UTF8); -  the                     stringResline; *  $System.Text.StringBuilder Resstringbuilder =NewSystem.Text.StringBuilder ();Panax Notoginseng  -                      while((Resline = Resstreamreader.readline ())! =NULL) the                     { +Resstringbuilder.append (Resline +System.Environment.NewLine); A                     } the  + resstream.close (); - resstreamreader.close (); $  $                     returnresstringbuilder.tostring (); -                 } -             } the             Catch(Exception ex) -             {Wuyi                 returnEx. Message;//URL error when return wrong the             } -         } Wu         #endregionPost/get Commit Call Fetch

View Code

Get a user's geographic location based on IP