jquery - select2 with ajax MVC does not hit results option -

i using select2 autocomplete , select multiple options. below how initialize select2

$(".selectpickerphone").select2({   allowclear: true,   minimuminputlength: 2,   ajax: {     cache: false,     datatype: "json",     type: "get",     url: "@url.action("getcontactnumbers ", "hmcontroller")",     data: function(searchterm) {       return searchterm;     },     results: function(data) {       debugger;       if (data.isuser) {         return;       }       return {         results: $.map([data], function(item) {           return {             text: item.name,             id: item.phonenum,             data: item           }         })       };     }   },   formatresult: function(response) {     data = response.data;     console.log(data);     this.description =       '<div id="fmu_select2_ajax_result">' +       "<div>nom du produit : " + data.name + "</div>" +       "<div>" +       "<div>" + data.phonenum+ "</div>" +       "</div>" +       '</div>';     return this.description;   },   formatselection: function(response) {     data = response.data;     return data.phonenum+ " - " + data.name;   },   escapemarkup: function(m) {     return m;   },   dropdowncssclass: "bigdrop" }); 

below jsonresult - actionmethod

[httpget] public jsonresult getcontactnumbers(string term) {     using (_db = new context())     {         _adrep = new adrp();         var contactlist = _adrep.fetchcustomeruserphone(_db,term);         return json(contactlist, jsonrequestbehavior.allowget);     } } 

and below response when viewed in network tab.

[{"name":"guruprasad rao","isuser":true,"phonenum":"8495000049"},  {"name":"guruprasad rao","isuser":false,"phonenum":"8495000050"},  {"name":"test","isuser":false,"phonenum":"8495000051"}] 

but no matter what, debugger i've placed in results option of ajax not hit , data not displayed. how receive response , display it?

update

i using select2 v4.0.1

i tried bind in asp.net mvc 5.

i used web services ,controller http post method, web api 2 not use in call event of select2 .

use asp.net generic handler produce callback result try bind select2.