html - Error while Calling Wcf restful service in mvc3? -

following operationcontract in iservice1 :

 [operationcontract]  [webget(uritemplate = "/getstates",responseformat = webmessageformat.json)]   list<string> getstates();  implementation of method getstates in service1 class :  public list<string> getstates()         {             db_mvcentities db = new db_mvcentities();            // string temp = countryname.country;              string temp = "india";              var countryid = (from n in db.tblcountries                              n.country == temp                              select new { n.cid }).single();               int ii = countryid.cid;              // int ii =  (objectquery<int32>)countryid;              // object oo = countryid;              //int countryid = convert.toint32(countryid);              var stateresult = (from n in db.tblstates                                n.cid == countryid.cid                                select n.statename).tolist();              list<string> aaa = new list<string>();              foreach (object o in stateresult)             {                 string t = o.tostring();                 aaa.add(o.tostring());              }              return aaa;         } 

in above method taking state list database using entity framework. when executing wcf service on browser working fine.means getting following output

output of above service follows:

["mh","ap"]   code consuming in mvc3, register.csheml file:   $(document).ready(function () {          $("#country").change(function () {              $.ajax({                 url: 'http://localhost:1264/service1.svc/getstates',                 type: 'get',                  contenttype: 'application/json; charset=utf-8',                 success: function (data) {                     $('#state option').remove();                     $.each(data, function (index, val) {                         var optiontag = $('<option></option>');                         $(optiontag).text(val.tostring());                          $('#state').append(optiontag);                     });                 },                 error: function () {                     alert("bye..countryes.");                 }             });         });     }); 

i getting following output when change event occurs of country: control not going in success method.

on success binding state list state dropdown list.

but unable json data in mvc3.

bye..countryes.  error? in advance.