asp.net ajax不发送数据

Question

My AJAX is not sending data to my http post controller.

My controller:

[Route("api/sendingData")]
public class TestController : ApiController
{
    [HttpPost]
    public string Post([FromBody] int propertyID)
    {
        return string.Format("Test");
    }
}

My AJAX:

$.ajax(
    {
        url: "api/sendingData",
        type: "POST",
        dataType: 'json',
        data: {
            'propertyID': '1'
        },
        success: function (result) {
            console.debug(result);
            alert(result);
        },
        error: function (xhr, status, p3, p4) {
            console.debug(xhr);
            var err = "Error " + " " + status + " " + p3;
            if (xhr.responseText && xhr.responseText[0] == "{")
                err = JSON.parse(xhr.responseText).message;
            alert(err);
        }
    });

I'm trying to send the propertyID=1. However, when I debug my controller, it shows propertyID=0.

Does anyone know what is wrong?

Answer 1

Might look weird but you're only sending one value, not a model, so the stringify is JSON.stringify(value)

var propertyID = 1;
$.ajax({
    url: "api/sendingData",
    contentType: 'application/json',
    type: 'POST',
    data: JSON.stringify(propertyID),
    success: function (result) {
        console.debug(result);
        alert(result);
    },
    error: function (xhr, status, p3, p4) {
        console.debug(xhr);
        var err = "Error " + " " + status + " " + p3;
        if (xhr.responseText && xhr.responseText[0] == "{")
            err = JSON.parse(xhr.responseText).message;
        alert(err);
    }
});

Also I have removed dataType json because your action method is not returning json but a string. Now I'm getting success.