face a null value.

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I have use this code for delete multiple entry on button click.But i have face null value(Id).Please check this code

It's me jquery code

function confirmDelete() {

debugger;

var EducationalId = [];

$(".chk:checked").each(function (i, y) {

debugger;

EducationalId.push($(this).val());

});

swal({

title: "Confirmation?",

text: "Are you sure you want to delete record?",

type: "warning",

confirmButtonClass: "btn-danger",

showCancelButton: true,

confirmButtonText: "Yes",

closeOnConfirm: false

function (isConfirm) {

if (!isConfirm) return;

$.ajax({

url: "DeleteImageData",

type: "POST",

data: JSON.stringify(EducationalId),

contentType: 'application/json; charset=utf-8',

datatype: 'json',

success: function () {

swal({

title: "Done", text: "Image deleted successfully",

type: "success"

}, function () {

location.reload();

});

error: function (xhr, ajaxOptions, thrownError) {

swal("Error deleting!", "Please try again", "error");

}

});

};

it's me mvc code public IActionResult DeleteImageData(int[] EducationalId) Here we have face a issue (Id is 0)

it's me button click

Please check this

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh5y ago
Accepted answer
use like below works even in worst condintion
var query = "?";
        for (var i = 0; i < arr.length; ++i) {
            query += "arr=" + arr[i] + "&";
        }
        $.ajax({
            url: "/PagiNationTest/SaveArrary"+query,
            type: "POST",

            contentType: 'application/json; charset=utf-8',
            datatype: 'json',
            success: function () {



            }

        })
5y ago
I have Use Asp.net core mvc and it's working fine my side
Khushbu Saini5y ago
@Mr scahin singh first don't try to answer me it's @dhiman question so answer him only. Okay may be it's work Your side but MVC core can't accept it ..if you hurted then practically try it becoz you can't received an stringify parameter in int array.
Sachin Singh5y ago
@Khushbu Saini
what do you mean , we can't send int[] , using Json.Stringify? below code will work perfectly in MVC.
function post() {
        debugger;
        var arr = [];
        arr.push(1);
        arr.push(2);

        $.ajax({
            url: "/PagiNationTest/SaveArrary",
            type: "POST",
            data: JSON.stringify(arr),
            contentType: 'application/json; charset=utf-8',
            datatype: 'json',
            success: function () {



            }

        })
    }

    public ActionResult SaveArrary(int[] arr)
    {
            return View();
    }
Khushbu Saini5y ago
you are passing your EducationIds in string format with stringify method

like this
data: JSON.stringify(EducationalId),

but receive these ids in int[] arrray? think about it , is it work ..as a developer obviously not
public IActionResult DeleteImageData(int[] EducationalId)

so change it to

public IActionResult DeleteImageData(string EducationalId)

Now you receive your array in EducationalId string variable
if you want to send your multiple ids to controller through json then you should have to received it into a string variable with comma seperated .

like this

var EducationalId="";

EducationalId+=$(this).val()+",";

and then pass is

data: JSON.stringify(EducationalId),

and on controller side when you receive it in string parameter just split it with comma and get your id.

public IActionResult DeleteImageData(string EducationalId) {

var id=EducationalId.Split(',');

}