Ajax无刷新分页源码--未使用分页控件

select   *   from  
(
     SELECT  Id, IpAddress, Comment, PostDate,row_number()  over ( order   by  postdate)  as  rownum
      FROM  dbo.T_Comment
)t 
where  t.rownum >= @startRowIndex   and  t.rownum <= @endRowIndex

SELECT   COUNT ( * )  FROM  T_Comment

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
     < title ></ title >
     < script  src ="Scripts/jquery-1.4.1.js"  type ="text/javascript" ></ script >
     < style  type ="text/css" >
        ul
         {
            list-style :  none ;
            margin :  0px ;
            padding :  0px ;
         }
        li
         {
            border-bottom :  1px dashed #000 ;
            padding :  5px ;
            font-family :  "微软雅黑" ;
            font-size :  12px ;
         }
        .column
         {
            width :  80% ;
            margin :  100px auto ;
            padding :  10px ;
            border :  1px solid #000 ;
         }
        p
         {
            background :  #CCC ;
            padding :  10px ;
         }
        .divstyle
         {
            min-height :  50px ;
            padding :  10px ;
         }
        .trPage
         {
         }
     </ style >
     < script  type ="text/javascript"  language ="javascript" >
        $( function  () {

             // 请求默认显示第一页数据

            $.post( " PageServices.ashx " , {  " action " :  " getpagedata " ,  " pagenum " :  " 1 "  },  function  (data, status) {
                 if  (status  ==   " success " ) {
                     var  comments  =  $.parseJSON(data);
                    $( " #ulComments li " ).remove();    // 首先清空上一次的数据;
                     for  ( var  i  =   0 ; i  <  comments.length; i ++ ) {
                         var  comment  =  comments[i];
                         var  li  =  $( " <li><p>回复日期: "   +  comment.postDate  +   " &nbsp;&nbsp;&nbsp;&nbsp;回复IP地址： "   +  comment.ipAddress  +   " </p><div class='divstyle'> "   +  comment.comment  +   " </div></li> " );

                        $( " #ulComments " ).append(li);
                    }
                }
            });


            $.post( " PageServices.ashx " , {  " action " :  " getpagecount "  },  function  (data, status) {
                 for  ( var  i  =   1 ; i  <=  data; i ++ ) {
                     var  td  =  $( " <td><a href=''> "   +  i  +   " </a></td> " );
                    $( " .trPage " ).append(td);
                }

                 // 给链接添加click事件
                $( " .trPage td " ).click( function  (e) {
                    e.preventDefault();

                    $.post( " PageServices.ashx " , {  " action " :  " getpagedata " ,  " pagenum " : $( this ).text() },  function  (data, status) {
                         var  comments  =  $.parseJSON(data);   // 使用JSON序列化数据;
                        $( " #ulComments li " ).remove();    // 首先清空上一次的数据;

                         for  ( var  i  =   0 ; i  <  comments.length; i ++ ) {    // 遍历响应的数据data
                             var  comment  =  comments[i];    // 取到每条评论

                             // 最后向ul中加载li（数据的内容）
                             var  li  =  $( " <li><p>回复日期: "   +  comment.postDate  +   " &nbsp;&nbsp;&nbsp;&nbsp;回复IP地址： "   +  comment.ipAddress  +   " </p><div class='divstyle'> "   +  comment.comment  +   " </div></li> " );
                            $( " #ulComments " ).append(li);
                        }
                    });
                });
            });
        });
     </ script >
</ head >
< body >
     < div  class ="column" >
         < table >
             < tr  class ="trPage" >
             </ tr >
         </ table >

         < ul  id ="ulComments" >
         </ ul >

         < table >
             < tr  class ="trPage" >
             </ tr >
         </ table >
     </ div >
</ body >
</ html >

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Web;
using  Ajax无刷新分页.DataSetCommentTableAdapters;
using  System.Web.Script.Serialization;

namespace  Ajax无刷新分页
{
     ///   <summary>
     ///  PageServices 的摘要说明
     ///   </summary>
     public   class  PageServices : IHttpHandler
    {

         public   void  ProcessRequest(HttpContext context)
        {
            context.Response.ContentType  =   " text/plain " ;
             string  action  =  context.Request[ " action " ];

             if  (action  ==   " getpagecount " )   // 如果请求的参数是getpagecount（获取页数）
            {
                var adapter  =   new  T_CommentTableAdapter();
                 int  count  =  adapter.SelectCount().Value;   // 获取数据总条数
                 int  pageCount  =  count  /   10 ;    // 每页只显示10条

                 if  (count  %   10   !=   0 )     // 如果数据不够10条，则只显示第一页
                {
                    pageCount ++ ;
                }
                context.Response.Write(pageCount);    // 返回页数
            }
             else   if  (action  ==   " getpagedata " )    // 如果请求的的参数是getpagedata（获取评论内容）
            {
                 string  pagenum  =  context.Request[ " pagenum " ];    // 获取客户端点击的是哪一页
                 int  iPageNum  =  Convert.ToInt32(pagenum);
                var adapter  =   new  T_CommentTableAdapter();
                 //  (iPageNum-1)*10+1  第一条数据，（iPageNum）*10 最后一条数据;
                var data  =  adapter.GetPageData((iPageNum  -   1 )  *   10   +   1 , (iPageNum)  *   10 );

                List < Comment >  list  =   new  List < Comment > ();    // 由于数据过于复杂所引发异常，定义一个Comment的类，内有postDate,comment两个属性；
                 foreach  (var row  in  data)    // 遍历data
                {
                    list.Add( new  Comment()
                    {
                        postDate  =  row.PostDate.ToShortDateString(),
                        comment  =  row.Comment,
                        ipAddress  =  row.IpAddress
                    });
                }
                JavaScriptSerializer jss  =   new  JavaScriptSerializer();
                context.Response.Write(jss.Serialize(list));   // 返回序列化的数据;
            }
        }

         public   bool  IsReusable
        {
             get
            {
                 return   false ;
            }
        }
    }

     public   class  Comment
    {
         public   string  postDate {  get ;  set ; }
         public   string  comment {  get ;  set ; }
         public   string  ipAddress {  get ;  set ; }
    }
}