动态添加上传控件，并上传文件

 $(function () {
            $("#ButtonAdd").on("click", function () {
                var content = "<tr style=‘vertical-align:middle;‘><td>";
                content += "<input type=‘checkbox‘ name=‘cbk‘ />";
                content += "<input type=‘file‘ name=‘filename‘>";
                content += "</td></tr>"
                $("#TableFile").append(content);
            });

            $("#ButtonSubtract").on("click", function () {
                $(‘input[name="cbk"]‘).each(function () {
                    if (this.checked) {                       
                        $(this).closest(‘tr‘).remove();
                    }
                });              
            });

            $("#SubmitUpload").on(‘click‘, function () {
                $(‘#FormFile‘).attr(‘action‘, ‘DynamicUploadFiles‘);
                $("#FormFile").submit();
            });
        });