AJAX & Web Api Post Method - How does it work?

Question

I am trying to write to my database using AJAX / Jquery and c#. Whenever I pass the parameter in to the C# code it shows as null. I am using the default template that visual

Answer 1

$("#updateuser").click(function () {

        var id = $("#id").val();
        var dataJSON = $("#username").val();

        alert("" + dataJSON);

        $.ajax({


            url: 'http://localhost:44700/api/Home/' + id,
            type: 'PUT',
            data: JSON.stringify(dataJSON),
            contentType: 'application/json; charset=utf-8',
            dataType: 'json',

            success: function (data, textStatus, xhr) {
                $.each(data, function (key, val) {
                    $("<li>" + val + "</li>").appendTo($("#names"));
                })
            },
            error: function (xhr, textStatus, errorThrown) {
                alert('Error in Operation');
            }

            })

    })