正文
首先我们创建一般处理程序，来读取数据库中内容，得到返回值.
创建文件，getdata.ashx.
我这里是用的存储过程，存储过程会再下面粘出来，至于数据只是实例，你们可根据需求自行读取数据
代码如下：
<%@ WebHandler Language="C#" Class="GetData" %>
using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.Collections.Generic;
using System.Web.Script.Serialization;
public class GetData : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
var pageIndex = context.Request["PageIndex"];
string connectionString = @"Data Source=KUSE\SQLEXPRESS;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 books";
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 list = new List();
using (SqlDataReader sdr = SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, "PAGINATION", parms))
{
while (sdr.Read())
{
list.Add(new Book { Title = sdr[2].ToString(), Auhor = sdr[2].ToString(), PublishDate = sdr[4].ToString(), ISBN = sdr[5].ToString() });
}
}
context.Response.Write(new JavaScriptSerializer().Serialize(list).ToString());//转为Json格式
}
}
public bool IsReusable {
get {
return false;
}
}
}
public class Book
{
public string Title { get; set; }
public string Auhor { get; set; }
public string PublishDate { get; set; }
public string ISBN { get; set; }
} 显示数据页面----异步请求获取数据，基于jquery
创建页面Show.htm
/*显示数据内容*/
/*显示分页条*/
js代码
$(function () {
$.post("GetData.ashx", null, function (data) {
var total = data;
PageClick(1, total, 3);
});
PageClick = function (pageIndex, total, spanInterval) {
$.ajax({
url: "GetData.ashx",
data: { "PageIndex": pageIndex },
type: "post",
dataType: "json",
success: function (data) {
//索引从1开始
//将当前页索引转为int类型
var intPageIndex = parseInt(pageIndex);
//获取显示数据的表格
var table = $("#content");
//清楚表格中内容
$("#content tr").remove();
//向表格中添加内容
for (var i = 0; i < data.length; i++) {
table.append(
$("" +
data[i].Title
+ " " +
data[i].Auhor
+ " " +
data[i].PublishDate
+ " " +
data[i].ISBN
+ " 分页样式----如果有感兴趣的，我这里还有20几套分页样式
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
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
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