ASP.NET JSON AJAX

while (reader.Read())

            {

                int id = (int)reader["ID"];

                string title = reader["Title"].ToString().Replace("\"", "\\\"");//数据库标题字段

                string isbn = reader["Author"].ToString();

                string unitPrice = reader["ImagePath"].ToString();

                //以json格式输出  

                content += "{\"id\":\"" + id + "\",\"title\":\"" + title + "\",\"isbn\":\"" + isbn + "\",\"unitPrice\":\"" + unitPrice + "\"},";



            }

 $(function () {

            $.ajax({

                url: "TestAjax.aspx", //发送请求的URL地址.   

                dataType: "json", //服务器返回的数据类型  

                //每页显示3条记录,当前页是第一页,[要发送给服务器的数据,以 Key/value 的键值对形式表示,会做为QueryString附加到请求URL中]  

                data: { pagesize: 3, pageindex: pageIndex },

                success: function (data, textStatus) {//[返回的data可以是xmlDoc,jsonObj,html,text等][textStatus请求状态：success，error等]  

                    for (var i = 0; i < data.records.length; i++) {//循环输出内容  

                        $("<tr><td>" + data.records[i].title + "</td><td>" + data.records[i].isbn + "</td><td><img src='" + data.records[i].unitPrice + "'/></td><td>" + data.records[i].id + "</td></tr>").appendTo($("table"));

                    }

                    totalPages = window.parseInt(data.totalpages); //获取总页0数  

                    $("#ShotTotalPage").text("共" + totalPages + "页" + "/" + "第" + pageIndex + "页");

                },

<table>  

        <tr>  

            <th>标题</th><th>作者</th><th>副标题</th><th>编号</th>   

        </tr>  

    </table>