javascript - Post files and object in the same AJAX request -

i have data , files should posted in 1 same ajax request. tried solutions null in controller (files sent fine , when change tester class simple string works).

my js:

function sendajaxwithfile (formdata, successcallback, errorcallback) {     successcallback = successcallback || function () { };     errorcallback = errorcallback || function () { };      $.ajax({         url: "/test/save",         type: "post",         data: formdata,         cache: false,         processdata: false,         contenttype: false,         success: successcallback,         error: errorcallback     }); }  var data = new formdata(); data.append("tester", { name: "qwerty" }); data.append("somefile", file);  $scope.sendajaxwithfile(data, function (response, textstatus, jqxhr) { }, function (jqxhr, textstatus, errorthrown) { }); 

and server side code:

[ajaxonly] [httppost] [route("save")] public async task<jsonresult> save(tester tester, httppostedfilebase somefile) {     return await task.fromresult(json(0)); } 

tester class:

public class tester {     public string name { get; set; }     public datetime date { get; set; } } 

i did workaround, because don't think can resolved in normal way...

my solution send string data serialized js object.

data.append("serializedjsonstring", json.stringify({ name: "qwerty" })); // can serialize want 

i needed change parameter of save method json string data , convert tester class manually:

[ajaxonly] [httppost] [route("save")] public async task<jsonresult> save(string serializedjsonstring, httppostedfilebase somefile) {     var decodedjson = httputility.urldecode(serializedjsonstring);     var jtester = jobject.parse(decodedjson);     var tester = new tester { name = jtester["name"].tostring() };      return await task.fromresult(json(0)); }