Json收到的数据=空

Question

Hi I have json request like here:

$.ajax({
        url: "/DeviceUsage/FreeDevice",
        type: "POST",
        data: JSON.stringify({ data: Ids }),
        error: function (data) {
            alert("error " + data);
        },
        success: function (data) {
            if (data === "") {
                alert("succes")
            }
            else {
                alert(data);
            }
        }
    });

where Ids = var Ids = new Array(); ( full of ints)

My Json looks like this:

{"data":[38,40,41]} 

method where I'm receiving Json:

[HttpPost]
public JsonResult FreeDevice(FreeDeviceModel m)
{
    return Json("");
}

and my ViewModel:

public class FreeDeviceModel
{
    public List<int> data { get; set; }
}

I cross checked everything with Json validator, Json2C#

and eveything looks correct so why nothing is reveived by the FreeDevice method?

For clarification I have problem with this :

Data shoudl be List of 3 elements but is Null

Answer 1

Did you try setting the dataType to JSON

dataType: 'json',
data: {"data":[38,40,41]} 

Hope it helped...