Send array of numbers from JS to asp.net MVC action

Question

I want to send array of numbers to my back action and I am getting NULL or error whatever I try. This is my current code.

JS

$.ajax({
        traditional: true,
        dataType: "json",
        contentType: 'application/json; charset=utf-8',
        type: "POST",
        data: JSON.stringify(groupIds),
        url: '/Admin/ReadMessages',
        error: function (error) {
            swal.fire({
                title: "Something went wrong. Please try again later.",
                type: "error"
            });
        }
    });

MVC

public ActionResult ReadMessages(List<long> groupIds)
{
     return new HttpStatusCodeResult(HttpStatusCode.OK);
}

Any ideas?

Amin Saadati · Accepted Answer · 2019-06-25 13:43:07Z

2

try this

var arr= new Array();
arr.push(1);
arr.push(2); 

$.ajax({  
    type: "POST",
    url: urlToPost,
    data: JSON.stringify(arr),
    contentType: "application/json"
   });

edited Jun 25, 2019 at 13:43

answered Jun 25, 2019 at 13:32

Amin Saadati

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2 Comments

Serlok Over a year ago

U helped me realize what I was doing wrong, error isn't in post it's in my array... Ty

Amin Saadati Over a year ago

@Serlok exactly I thought about it so I decided to put the array here. so i'm happy to help you ;)

Serlok · Accepted Answer · 2019-06-25 13:43:22Z

1

Just to clear out for others, as @Amin stated and I realized, error was in sending NON array object, I was using map function and it returned some jquery array, but when I instantiated new Array and sent it, it worked perfectly.

answered Jun 25, 2019 at 13:43

Serlok

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Comments

Satish Patil · Accepted Answer · 2019-06-25 13:41:59Z

0

$.ajax({
    traditional: true,
    dataType: "json",
    contentType: 'application/json; charset=utf-8',
    type: "POST",
    data: { 'groupIds': groupIds} ,
    url: '/Admin/ReadMessages',
    error: function (error) {
        swal.fire({
            title: "Something went wrong. Please try again later.",
            type: "error"
        });
    }
});

And in Controller :

public ActionResult ReadMessages(IEnumerable<long> groupIds))
{
     return new HttpStatusCodeResult(HttpStatusCode.OK);
}

answered Jun 25, 2019 at 13:41

Satish Patil

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Comments

Serlok · Accepted Answer · 2019-06-25 17:34:38Z

0

$.ajax({
    traditional: true,
    dataType: "json",
    contentType: 'application/json; charset=utf-8',
    type: "POST",
    data:{groupIds:groupIds},
    url:'@Url.Action("ReadMessages", "Admin")',
    error: function (error) {
        swal.fire({
            title: "Something went wrong. Please try again later.",
            type: "error"
        });
    }
});

controller:

[HttpPost]
public ActionResult ReadMessages(IEnumerable<long> groupIds))
{
     return new HttpStatusCodeResult(HttpStatusCode.OK);
}

edited Jun 25, 2019 at 17:34

Serlok

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answered Jun 25, 2019 at 14:11

Hiba T

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