问未调用AJAX/JSON MVC方法

EN

<script>
    $(document).ready(function () {

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

            var selected = $("#screeners").val();

            $.ajax({
                contentType: 'application/json; charset=utf-8',
                dataType: 'json',
                type: 'POST',
                url: '/Applicant/PassScreeners',
                data: "selected=" + JSON.stringify(selected),
                success: function () {
                    $('#result').html('"PassScreeners()" successfully called.');
                },
                failure: function (response) {
                    $('#result').html(response);
                }
            });
        });
    });
</script>

public void PassScreeners(List<string> selected)
{
    Session["SelectedApplicants"] = selected.Select(e => Int32.Parse(e.ToString())).ToList();
}