基于Jquery+Ajax+Json+高效分页

using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.Collections.Generic;
using System.Web.Script.Serialization;
public class ProductHandler: IHttpHandler {

public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
var pageIndex = context.Request["PageIndex"];
string connectionString = @"Data Source=.;Initial Catalog=bookshop;Integrated Security=True";
//判断当前索引存不存在，如果不存在则获取记录的总数。
if (string.IsNullOrEmpty(pageIndex))
{
//获取查询记录总数的sql语句
string sql = "select count(-1) from Products ";
int count = 0;
int.TryParse(SqlHelper.ExecuteScalar(connectionString, System.Data.CommandType.Text, sql, null).ToString(), out count);
context.Response.Write(count);
context.Response.End();
}
//当根据索引获取数据
else
{
int currentPageIndex = 1;
int.TryParse(pageIndex, out currentPageIndex);
SqlParameter[] parms = new SqlParameter[] {
new SqlParameter("@FEILDS",SqlDbType.NVarChar,1000),
new SqlParameter("@PAGE_INDEX",SqlDbType.Int,10),
new SqlParameter("@PAGE_SIZE",SqlDbType.Int,10),
new SqlParameter("@ORDERTYPE",SqlDbType.Int,2),
new SqlParameter("@ANDWHERE",SqlDbType.VarChar,1000),
new SqlParameter("@ORDERFEILD",SqlDbType.VarChar,100)
};
parms[0].Value = "*";//获取所有的字段
parms[1].Value = pageIndex;//当前页面索引
parms[2].Value = 10;//页面大小
parms[3].Value = 0;//升序排列
parms[4].Value = "";//条件语句
parms[5].Value = "ID";//排序字段
List<Book> list = new List<Book>();
using (SqlDataReader sdr = SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, "PAGINATION", parms))
{
while (sdr.Read())
{
list.Add(new Products { ProductTypeName = sdr[2].ToString() });
}
}

context.Response.Write(new JavaScriptSerializer().Serialize(list).ToString());//转为Json格式
}
}

public bool IsReusable {
get {
return false;
}
}

}

public class Products : BaseEntity
{
/// <summary>
/// 商品分类ID
/// </summary>
public int ProductTypeId { get; set; }
/// <summary>
/// 商品分类名称
/// </summary>
public string ProductTypeName { get; set; }
/// <summary>
/// 商品分类系列ID
/// </summary>
public int SeriesTypeId { get; set; }
/// <summary>
/// 商品分类系列名称
/// </summary>
public string SeriesTypeName { get; set; }
/// <summary>
/// 商品名称
/// </summary>
public string PName { get; set; }
/// <summary>
/// 商品规格
/// </summary>
public string Specifications { get; set; }
/// <summary>
/// 商品单位
/// </summary>
public string Unit { get; set; }
/// <summary>
/// 商品批发价
/// </summary>
public decimal WholesalePrice { get; set; }
/// <summary>
/// 商品零售价
/// </summary>
public decimal RetailPrice { get; set; }
/// <summary>
/// 商品说明
/// </summary>
public string Remark { get; set; }
/// <summary>
/// 商品创建时间
/// </summary>
public string CreateTime { get; set; }
}

　　

显示数据页面----异步请求获取数据，基于jquery

创建页面web.aspx

<table class="tablelist">

<asp:Repeater ID="reProducts" runat="server">

<HeaderTemplate>

<thead>

<tr>

<th></th>

<th>商品分类</th>

<th>商品系列分类</th>

<th>商品名称</th>

<th>商品规格</th>

<th>商品单位</th>

<th>商品批发价</th>

<th>商品零售价</th>

<th>商品创建时间</th>

</tr>

</thead>

</HeaderTemplate>

<ItemTemplate>

<tbody>

</tbody>

</ItemTemplate>

</asp:Repeater>

</table>

<div class="pagin">

<div class="message">共<i class="blue"></i>条记录，当前显示第<i class="blue"></i>页</div>

<div id="pager" class="yahoo2"></div>

</div>

js代码

function pageList() {
$.post("/Product/ProductHandler.ashx", null, function (result) {
PageClick(1, result, 3);
});
}

PageClick = function (pageIndex, total, spanInterval) {
$.ajax({
url: "/Product/ProductHandler.ashx",
data: { "PageIndex": pageIndex },
type: "post",
dataType: "json",
success: function (jsondata) {
//索引从1开始
//将当前页索引转为int类型
var intPageIndex = parseInt(pageIndex);
var table = $(".tablelist");
//先清空table>tbody中的内容,再进行赋值
table.find("tbody").children().remove();
var data = eval(jsondata);
//向表格中添加内容
$.each(data, function(idx, item) {
var row = $("<tr></tr>");
var td = "<td><input name=\"productId\" type=\"radio\" value=\"" + item.Id + "\" /></td>" +
"<td>" + item.ProductTypeName + "</td>" +
"<td>" + item.SeriesTypeName + "</td>" +
"<td>" + item.PName + "</td>" +
"<td>" + item.Specifications + "</td>" +
"<td>" + item.Unit + "</td>" +
"<td>" + item.WholesalePrice + "</td>" +
"<td>" + item.RetailPrice + "</td>" +
"<td>" + item.CreateTime + "</td>";
var firstTr = table.find('tbody>tr:first');
row.append(td);
table.append(row);
});
//创建分页
//将总记录数结果 得到 总页码数
var pageS = total;
if (pageS % 10 == 0) pageS = pageS / 10;
else pageS = parseInt(total / 10) + 1;
var $pager = $("#pager");
//清楚分页div中的内容
$("#pager span").remove();

$("#pager label").remove();
$("#pager a").remove();
//添加第一页
if (intPageIndex == 1)
$pager.append("<span class='disabled'>第一页</span>");
else {
var first = $("<a href='javascript:void(0)' first='" + 1 + "'>第一页</a>").click(function () {
PageClick($(this).attr('first'), total, spanInterval);
return false;
});
$pager.append(first);
}
//添加上一页
if (intPageIndex == 1)
$pager.append("<span class='disabled'>上一页</span>");
else {
var pre = $("<a href='javascript:void(0)' pre='" + (intPageIndex - 1) + "'>上一页</a>").click(function () {
PageClick($(this).attr('pre'), total, spanInterval);
return false;
});
$pager.append(pre);
}
//设置分页的格式  这里可以根据需求完成自己想要的结果
var interval = parseInt(spanInterval); //设置间隔
var start = Math.max(1, intPageIndex - interval); //设置起始页
var end = Math.min(intPageIndex + interval, pageS)//设置末页

if (intPageIndex < interval + 1) {
end = (2 * interval + 1) > pageS ? pageS : (2 * interval + 1);
}
if ((intPageIndex + interval) > pageS) {
start = (pageS - 2 * interval) < 1 ? 1 : (pageS - 2 * interval);

}
//生成页码
for (var j = start; j < end + 1; j++) {
if (j == intPageIndex) {
var spanSelectd = $("<label style='color: #000;'>" + j + "</label>");
$pager.append(spanSelectd);
} //if
else {
var a = $("<a href='javascript:void(0)'>" + j + "</a>").click(function () {
PageClick($(this).text(), total, spanInterval);
return false;
});
$pager.append(a);
} //else
} //for
//上一页
if (intPageIndex == pageS) {
$pager.append("<span class='disabled'>下一页</span>");
}
else {
var next = $("<a href='javascript:void(0)' next='" + (intPageIndex + 1) + "'>下一页</a>").click(function () {
PageClick($(this).attr("next"), total, spanInterval);
return false;
});
$pager.append(next);
}
//最后一页
if (intPageIndex == pageS) {
$pager.append("<span class='disabled'>最后一页</span>");
}
else {
var last = $("<a href='javascript:void(0)' last='" + pageS + "'>最后一页</a>").click(function () {
PageClick($(this).attr("last"), total, spanInterval);
return false;
});
$pager.append(last);
}
} //sucess
}); //ajax
}; //function

　　

分页样式

<style type="text/css">
DIV.yahoo2 {
PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-SIZE: 0.85em; PADDING-BOTTOM: 3px; MARGIN: 3px; PADDING-TOP: 3px; FONT-FAMILY: Tahoma,Helvetica,sans-serif; TEXT-ALIGN: center
}
DIV.yahoo2 A {
BORDER-RIGHT: #ccdbe4 1px solid; PADDING-RIGHT: 8px; BACKGROUND-POSITION: 50% bottom; BORDER-TOP: #ccdbe4 1px solid; PADDING-LEFT: 8px; PADDING-BOTTOM: 2px; BORDER-LEFT: #ccdbe4 1px solid; COLOR: #0061de; MARGIN-RIGHT: 3px; PADDING-TOP: 2px; BORDER-BOTTOM: #ccdbe4 1px solid; TEXT-DECORATION: none
}
DIV.yahoo2 A:hover {
BORDER-RIGHT: #2b55af 1px solid; BORDER-TOP: #2b55af 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #2b55af 1px solid; COLOR: #fff; BORDER-BOTTOM: #2b55af 1px solid; BACKGROUND-COLOR: #3666d4
}
DIV.yahoo2 A:active {
BORDER-RIGHT: #2b55af 1px solid; BORDER-TOP: #2b55af 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #2b55af 1px solid; COLOR: #fff; BORDER-BOTTOM: #2b55af 1px solid; BACKGROUND-COLOR: #3666d4
}
DIV.yahoo2 label {
BORDER-RIGHT: #ccdbe4 1px solid;
PADDING-RIGHT: 8px;
BACKGROUND-POSITION: 50% bottom;
BORDER-TOP: #ccdbe4 1px solid;
PADDING-LEFT: 8px;
PADDING-BOTTOM: 2px;
BORDER-LEFT: #ccdbe4 1px solid;
COLOR: #0061de;
MARGIN-RIGHT: 3px;
PADDING-TOP: 2px;
BORDER-BOTTOM: #ccdbe4 1px solid;
TEXT-DECORATION: none;
}
DIV.yahoo2 SPAN.disabled {
DISPLAY: none
}
DIV.yahoo2 A.next {
BORDER-RIGHT: #ccdbe4 2px solid; BORDER-TOP: #ccdbe4 2px solid; MARGIN: 0px 0px 0px 10px; BORDER-LEFT: #ccdbe4 2px solid; BORDER-BOTTOM: #ccdbe4 2px solid
}
DIV.yahoo2 A.next:hover {
BORDER-RIGHT: #2b55af 2px solid; BORDER-TOP: #2b55af 2px solid; BORDER-LEFT: #2b55af 2px solid; BORDER-BOTTOM: #2b55af 2px solid
}
DIV.yahoo2 A.prev {
BORDER-RIGHT: #ccdbe4 2px solid; BORDER-TOP: #ccdbe4 2px solid; MARGIN: 0px 10px 0px 0px; BORDER-LEFT: #ccdbe4 2px solid; BORDER-BOTTOM: #ccdbe4 2px solid
}
DIV.yahoo2 A.prev:hover {
BORDER-RIGHT: #2b55af 2px solid; BORDER-TOP: #2b55af 2px solid; BORDER-LEFT: #2b55af 2px solid; BORDER-BOTTOM: #2b55af 2px solid
}

</style>

　分页存储过程---PAGINATION

CREATE PROCEDURE [dbo].[PAGINATION]
@FEILDS  VARCHAR(1000),--要显示的字段
@PAGE_INDEX INT,--当前页码
@PAGE_SIZE INT,--页面大小
@ORDERTYPE BIT,--当为0时 则为 desc 当为1 时 asc
@ANDWHERE VARCHAR(1000)='',--where语句 不用加where
@ORDERFEILD VARCHAR(100) --排序的字段
as
DECLARE @EXECSQL VARCHAR(2000)
DECLARE @ORDERSTR VARCHAR(100)
DECLARE @ORDERBY VARCHAR(100)
BEGIN
set NOCOUNT on
IF @ORDERTYPE = 1
BEGIN
SET @ORDERSTR = ' > ( SELECT MAX(['+@ORDERFEILD+'])'
SET @ORDERBY = 'ORDER BY '+@ORDERFEILD+' ASC'
END
ELSE
BEGIN
SET @ORDERSTR = ' < ( SELECT MIN(['+@ORDERFEILD+'])'
SET @ORDERBY = 'ORDER BY '+@ORDERFEILD+' DESC'
END

IF @PAGE_INDEX = 1 --当页码是第一页时直接运行，提高速度
BEGIN
IF @ANDWHERE=''
SET @EXECSQL = 'SELECT TOP '+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM [books] '+@ORDERBY
ELSE
SET @EXECSQL = 'SELECT TOP '+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM [books] WHERE '+@ANDWHERE+' '+ @ORDERBY
END
ELSE
BEGIN
IF @ANDWHERE=''
BEGIN      --以子查询结果当做新表时 要给表名别名才能用
SET @EXECSQL = 'SELECT TOP'+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM [books] WHERE '+@ORDERFEILD+
@ORDERSTR+' FROM (SELECT TOP '+STR(@PAGE_SIZE*(@PAGE_INDEX-1))+' '+@ORDERFEILD+
' FROM [books] '+@ORDERBY+') AS TEMP) '+ @ORDERBY
END
ELSE
BEGIN
SET @EXECSQL = 'SELECT TOP'+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM [books] WHERE '+@ORDERFEILD+
@ORDERSTR+' FROM (SELECT TOP '+ STR(@PAGE_SIZE*(@PAGE_INDEX-1))+' '+@ORDERFEILD+
' FROM [books] WHERE '+@ANDWHERE+' '+@ORDERBY+') AS TEMP) AND '+@ANDWHERE+' '+ @ORDERBY
END
END
EXEC (@EXECSQL)--这里要加括号
END

　　

运行效果图



补充：

PageClick(1, total, 3); 这个函数，第一个参数是当前页码，第一调用为第一页，这个不用管，total：表示总记录数,第三个参数表示：当前索引和旁边个间隔几页