สอบถามการเลือกแถว Jquery กับ Gridview asp.net

    <script type="text/javascript">
        $(document).ready(function () {
            //scroll to end div
            //$('#dvGrid').scrollTop($('#dvGrid').prop("scrollHeight"));
            //Fixed IE11 scroll hits twice or more with debounce.
            $('#dvGrid').on("scroll", $.debounce(10, function () {
                //e.preventDefault();                       
                if ($(this).scrollTop() + $(this).innerHeight() >= $(this)[0].scrollHeight) {
                    var pageIndex = parseInt($('#<%= hfPageIndex.ClientID%>').val());
                    var totalPage = parseInt($('#<%= hfTotalPage.ClientID%>').val());
                    if ((pageIndex < totalPage)) {
                        $('#loadingPage').css('display', 'block');
                        pageIndex = pageIndex + 1;
                        $('#<%= hfPageIndex.ClientID%>').val(pageIndex.toString());
                        yetData(pageIndex);
                    }
                }
            }));

        function yetData(pageIndex) {
            //populate data from database
            $.ajax({
                data: "{'pageIndex': " + pageIndex + ", 'noOfRecord': 30}",
                type: "POST",
                datatype: "json",
                contentType: "application/json; charset=utf-8",
                url: "SEX.aspx/yetDataByJquery",
                async: true,
                success: OnSuccess,
                error: function (ห, ม, ต) {                
                    alert(ต);
                }
            });
            //setTimeout(function () {}, 5000); //2000
        }

        function OnSuccess(data) {
            var d = data.d
            for (var i = 0; i < d.length; i++) {
                $('#dvGrid').append(d[i].ID + "<br />");
            }
            $('#loadingPage').css('display', 'none');
        }