Converting Javascript JSON to .NET integer array

Question

I was trying to pass json data to .net mvc controller. it seems like mvc automatically converted id and lastdatetime to correct format, but not int[] currentIds, anyone know why?

var jsonData = {
                "id": id,
                "lastDataTime": lastDateTime,
                "currentIds": [1, 2, 3, 4]
            };


public void Process(int id, DateTime lastDateTime, int[] currentIds)
{

}

Are you sure your array is correctly set up: json.com/json-array — JsonStatham
– JsonStatham, Commented Sep 8, 2015 at 8:16
Yes. the json structure should be correct. I manage to debug and reach to that point of Process. i can get id and lastDateTime but currentIds is null. — Su Beng Keong
– Su Beng Keong, Commented Sep 8, 2015 at 8:22

temUser · Accepted Answer · 2015-09-08 08:19:41Z

2

Please try this:

$.ajax({
            type: "POST",
            url:"@Url.Action("Index", "Home")" ,
            data: {
                "id": id,
                "lastDataTime": lastDateTime,
                "currentIds": [1, 2, 3, 4]
            },
           dataType: "json",
           traditional: true,
           success: function(msg){
                       alert(msg)
                   }
    });


public ActionResult Index(int id, DateTime lastDateTime, int[] currentIds)
{

}

answered Sep 8, 2015 at 8:19

temUser

1428 bronze badges

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

7 Comments

Su Beng Keong Over a year ago

Sorry, i actually had my ajax setup as dataType : json.

Su Beng Keong Over a year ago

I managed to debug and reached the controller's process.. but int[] currentIds is null.

Su Beng Keong Over a year ago

no error, but the currentIds is null. suppose to get a list of integer array. I am using MVC 5

temUser Over a year ago

I also use MVC5... My code is .....public ActionResult Process(int id,DateTime? lastDataTime,int[] currentIds) { }$.ajax({ type: "POST", url:"@Url.Action("Process", "Home")" , data: { "id": id, "lastDataTime": lastDateTime, "currentIds": [1, 2, 3, 4] }, dataType: "json", traditional: true, success: function(msg){alert(msg)}

Su Beng Keong Over a year ago

i didn't set to traditional : true. what is this?

|

JsonStatham · Accepted Answer · 2015-09-08 08:42:19Z

1

Simplify this problem and get the array working first, try this:

View

var myArray = ["1", "2", "3","4"];


$.ajax(
                {
                    type: "POST", 
                    url: '/ControllerName/ActionMethod/',
                    data: JSON.stringify(myArray),
                    cache: false,
                    //dataType: "html",
                    success: ///            
})

Controller

public ActionResult Index(List<String> currentIds)
{
   ///
}

Debug this and check the list is populated then introduce the other objects.

edited Sep 8, 2015 at 8:42

answered Sep 8, 2015 at 8:31

JsonStatham

10.5k29 gold badges113 silver badges190 bronze badges

1 Comment

Su Beng Keong Over a year ago

Thx. found the culprit.

Collectives™ on Stack Overflow

Converting Javascript JSON to .NET integer array

2 Answers 2

7 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

7 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related