displaying json strings from controller in view over ajax in asp.net core 2 MVC

Question

Im calling an ajax function in a modal when I press a BTN which calls a Controller action and passes a parameter to controller. I now want to return strings as a Json back to the view and display them in the same Modal. Weirdly it worked on my laptop with dependency "System.Web.MVC" but doesnt seem to work in "Microsoft.AspNetCore.Mvc". When returning the Jsons I fill the inputs in the modal with those json strings but on the PC with asp.net core the Inputs just stay empty where on the laptop they get filled.

Controller return type

       return Json(new { Nachname, Vorname, UserName });

Ajax

$(document).ready(function () {
    $("#btnGet").click(function () {
        $.ajax(
            {
                type: "POST",
        url: "@Url.Action("getName", "Home")",
                data: {
                    UserName: $("#txtName").val()
                },
                success: function (result) {
                    $('#infos').show();
                    $('#txtName').addClass("form-control is-valid");
                    $('#InputFirstName').val(result.Vorname);
                    $('#InputLastName').val(result.Nachname);
                    $('#InputFirstName').show();
                    $('#InputLastName').show();
                    $('#labelInfo').show();
                },
                failure: function (response) {
                    alert(response.responseText);
                },
                error: function (response) {
                    alert(response.responseText);
                }
            });

    });
});

`

Have you looked in the browser console to see if there are any errors? Also if you do console.log(result); what's displayed in the console? — Izzy
– Izzy, Commented Jan 28, 2019 at 8:17
For Core MVC you should try this: return new JsonResult(new { Nachname, Vorname, UserName });, because ControllerBase doesn't have Json method. — Tetsuya Yamamoto
– Tetsuya Yamamoto, Commented Jan 28, 2019 at 8:19
@TetsuyaYamamoto I tried it but seem to have the same issue still. Would I have to change something in the Ajax? — Mischa Morf
– Mischa Morf, Commented Jan 28, 2019 at 8:22
@Izzy yes I tried that. I get the right strings ect in the console.log. Just doesnt get displayed in the Modal — Mischa Morf
– Mischa Morf, Commented Jan 28, 2019 at 8:25
@MischaMorf Can you update the question and include the string that is displayed in the console please. — Izzy
– Izzy, Commented Jan 28, 2019 at 8:27

Izzy · Accepted Answer · 2019-01-28 08:41:14Z

1

As I mentioned in the comments, your string which is returned to is:

{nachname: "Morf", vorname: "Mischa", userName: "mrfmi"}

And you're using it as:

$('#InputFirstName').val(result.Vorname);

Here result.Vorname will be undefined so you need to change it as follows:

$('#InputFirstName').val(result.vorname);
...

answered Jan 28, 2019 at 8:41

Izzy

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Comments

Fross · Accepted Answer · 2019-01-28 08:28:09Z

0

Could it be a missing parameter in your AJAX call?

Try adding:

dataType: "json"

to your parameters.

answered Jan 28, 2019 at 8:28

Fross

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2 Comments

Mischa Morf Over a year ago

Thats the string I get when I console.log(result) {nachname: "Morf", vorname: "Mischa", userName: "mrfmi"}

Mischa Morf Over a year ago

didnt work. Didnt have it in ajax but adding didnt help

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