asp.net uses AJAX to implement refresh-free paging

<script type=text/javascript>
       var pageIndex = 0;
       var pageSize = 5;
window.onload = AjaxGetData(name,0,5);
function AjaxGetData(name, index, size){
        $.ajax({
            url: jQueryPaging.aspx,
            type: Get,
            data: Name= + name + &PageIndex= + index + &PageSize= + size,
            dataType: json,
            success: function (data) {
                var htmlStr = ;
                htmlStr += 
                htmlStr += 
                htmlStr += 
                htmlStr += ;
                htmlStr +=    //data.cloudfileLists.length
                for (var i = 0; i < data.cloudfileLists.length; i++) 
                {
                    htmlStr += ;
                    htmlStr += 
                                      + 
                    htmlStr += ;
                }
                htmlStr += ;
                htmlStr += ;
                htmlStr += ;
                htmlStr += ;
                htmlStr += ;
                htmlStr += ;
                htmlStr += <table><thead><tr><td>编号</td><td>文件名</td></tr></thead><tbody><tr><td> + data.cloudfileLists[i].FileID + </td><td> + data.cloudfileLists[i].FileName + </td></tr></tbody><tfoot><tr><td colspan="&#39;6&#39;">;
                htmlStr += <span>共有记录 + data.Count + ;共<span id="&#39;count&#39;"> + (data.Count % 5 == 0 ? parseInt(data.Count / 5) : parseInt(data.Count / 5 + 1)) + </span>页 + </span>;
                htmlStr += 首    页   ;
                htmlStr += 前一页   ;
                htmlStr += 后一页   ;
                htmlStr += 尾    页   ;
                htmlStr += <input type="&#39;text&#39;"><input type="&#39;button&#39;" value="&#39;跳转&#39;" onclick="&#39;GoToAppointPage(this)&#39;"> ;
                htmlStr += </td></tr></tfoot></table>;
 
                $(#divSearchResult).html(htmlStr);//重写html
            },
            error: function (XMLHttpRequest, textStatus, errorThrown) {
                alert(XMLHttpRequest);
                alert(textStatus);
                alert(errorThrown);
            }
        });
    }
    //首页
    function GoToFirstPage() {
        pageIndex = 0;
        AjaxGetData($(#txtSearch).val(), pageIndex, pageSize);
    }
    //前一页
    function GoToPrePage() {
        pageIndex -= 1;
        pageIndex = pageIndex >= 0 ? pageIndex : 0;
        AjaxGetData($(#txtSearch).val(), pageIndex, pageSize);
    }
    //后一页
    function GoToNextPage() {
        if (pageIndex + 1 < parseInt($(#count).text())) {
            pageIndex += 1;
        }
        AjaxGetData($(#txtSearch).val(), pageIndex, pageSize);
    }
    //尾页
    function GoToEndPage() {
        pageIndex = parseInt($(#count).text()) - 1;
        AjaxGetData($(#txtSearch).val(), pageIndex, pageSize);
    }
    //跳转
    function GoToAppointPage(e) {
        var page = $(e).prev().val();
        if (isNaN(page)) {
            alert(请输入数字!);
        }
        else {
            var tempPageIndex = pageIndex;
            pageIndex = parseInt($(e).prev().val()) - 1;
            if (pageIndex < 0 || pageIndex >= parseInt($(#count).text())) {
                pageIndex = tempPageIndex;
                alert(请输入有效的页面范围!);
            }
            else {
                AjaxGetData($(#txtSearch).val(), pageIndex, pageSize);
            }
        }
    }
</script>

protected void Page_Load(object sender, EventArgs e)
{
    Int32 pageIndex = Int32.MinValue;
    Int32 pageSize = Int32.MinValue;
    String name = String.Empty;
    JavaScriptSerializer jss = new JavaScriptSerializer();
    if (Request[Name] != null)
    {
        name = Request[Name].ToString();
        if (Request[PageIndex] != null)
        {
            pageIndex = Int32.Parse(Request[PageIndex].ToString());
            pageSize = Request[PageSize] != null ? Int32.Parse(Request[PageSize].ToString()) : 5;
            IList<cloudfile> cloudfileLists = new List<cloudfile>();//cloudfile是自己写的类，表示一条数据</cloudfile></cloudfile>
            CloudFile cf = null;
            int cout = 0;
            DataSet ds = LookDataFromDB(name, pageIndex, pageSize,out cout);
            foreach (DataRow row in ds.Tables[0].Rows)//把你的数据重新封装成Lis，才能被jss.Serialize()，不然会报错。
            {
                cf = new CloudFile();
                cf.FileID = row[FilePathId].ToString();
                cf.FileName = row[FileName].ToString();
                cloudfileLists.Add(cf);
            }
            if (cloudfileLists.Count > 0)
            {
                Response.Write({Count: + (cout) + ,cloudfileLists: + jss.Serialize(cloudfileLists) + });
                Response.End();
            }
        }
    }
}
private DataSet LookDataFromDB(string name, int pageIndex, int pageSize,out int cout)
{
    DataSet ds = new DataSet();
    try
    {
        pageIndex = 5 * pageIndex;//pageIndex ，表示这一页从哪一条数据开始
       // 这里写自己的数据获取方法，把数据获取好了甩到ds里面，返回到前面。（应该有更好的办法，自己想哦，也可以发评论我们一起探讨....。）
    }
    catch (Exception)
    {
        cout = 0;
        ds = null;
    }
    return ds;
}

//<span style="font-family:">CloudFile类</span>

    public class CloudFile
    {
        public String FileID { get; set; }
        public String FileName { get; set; }
        public String FileDirName { get; set; }
    }