Ajax Call to ASP.NET MVC controller

Question

The jQuery code is :

var props = [
    { "Name": "firstName", "Value": "firstValue" }, 
    { "Name": "secondName", "Value": "secondValue" }
];

$.ajax({
     url: '/myURL',
     contentType: "application/json",
     async: true,
     type: "POST",
     data: JSON.stringify(props),
     error: function (jqXHR, textStatus, errorThrown) {
         console.log("FAIL: " + errorThrown);
     },
     success: function (data, textStatus, jqXHR) {
         console.log("SUCCESS!");
     }
});

The ASP.NET MVC controller

[HttpPost]
public async Task<ActionResult> Test(string myValue)
{
    return Json("something");
}

I hit the controller but myValue is null all the time.

Any idea ?

Thanks,

I don't hit the controller anymore and I get error 500. I checked with Fiddler for the request, json tab I have : JSON=myValue — TheBoubou
– TheBoubou, Commented Jul 26, 2022 at 9:40

Yong Shun · Accepted Answer · 2022-07-26 09:39:25Z

1

Modify your API action to expect to receive the input of List<Prop> type.

[HttpPost]
public async Task<ActionResult> Test(List<Prop> myValue)
{
    return Json("something");
}

public class Prop
{
    public string Name { get; set; }
    public string Value { get; set; }
}

Demo

answered Jul 26, 2022 at 9:39

Yong Shun

54.5k6 gold badges38 silver badges66 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

TheBoubou Over a year ago

Thanks a lot. But I'd like than the controller receive a string for compatibility reason with another stuff.

Yong Shun Over a year ago

I doubt that it is possible to do. Perhaps I think you need to read from Request.InputStream. Refer to: MVC controller : get JSON object from HTTP body?

fdomn-m Over a year ago

receive a string then you need to tell it you're sending a string - at the moment, you're telling it you're sending JSON (which, yes, is a string, but it's handled as json and converted to an object server-side before passing to your Action). Remove contentType: "application/json",

Collectives™ on Stack Overflow

Ajax Call to ASP.NET MVC controller

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related