问如何在选择ASP.NET MVC 4中的自动完成文本字段值时再进行ajax调用？

EN

$(function () {
    var src = '@Url.Action("GetParts", "Parts")'
    $("#autoCompleteBox").autocomplete({
        source: function (request, response) {
            $.ajax({
                url: src,
                async: true,
                dataType: "json",
                data: {
                    partNumber: $("#autoCompleteBox").val()
                },
                success: function (data) {
                    response(data[0]);
                }
            });
        },
        select: function (event, ui) {
           var item= ui.item.label;
           //Now make the ajax call here
           $.post("SomeValidUrl", new { id : item } ,function(res){
               // do something with res
           });
        }
    });
});