asp.net下 jquery jason 高效传输数据
来源：不详 责任编辑：栏目编辑 发表时间:2013-07-02 05:56 点击:次
Default.html
<!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>test2</title>
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script src="js/Gonneng.js" type="text/javascript"></script>
<script src="js/ajaxfn.js" type="text/javascript"></script>
</head>
<body>
<div>
<div>
<br />
<input id="first" type="button" value=" << " /><input id="previous" type="button"
value=" < " /><input id="next" type="button" value=" > " /><input id="last" type="button"
value=" >> " />
<span id="pageinfo"></span>
<ul id="datas">
<li id="template">
<span id="OrderID">
订单ID
</span>/
<span id="CustomerID">
客户ID
</span>
<span id="EmployeeID">
雇员ID
</span>/
<span id="OrderDate">
订购日期
</span>/
<span id="ShippedDate">
发货日期
</span>/
<span id="ShippedName">
货主名称
</span>/
<span id="ShippedAddress">
货主地址
</span>/
<span id="ShippedCity">
货主城市
</span>/
<span id="more">
更多信息
</span>
</li>
</ul>
</div>
<div id="load" style="left: 0px; position: absolute; top: 0px; background-color: red">
LOADING....
</div>
<input type="hidden" id="pagecount" />
</div>
</body>
</html>
Handler.ashx
<%@ WebHandler Language="C#" Class="jQueryJSON.Handler" %>
using System;
using System.Data;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Configuration;
using System.Data.SqlClient;
using System.Text;
using System.Xml;
using NetServ.Net.Json;
namespace jQueryJSON
{
/// <summary>
/// $codebehindclassname$ 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/json/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Handler : IHttpHandler
{
string dbfile = ConfigurationManager.AppSettings["conn"].ToString();
readonly int PageSize = int.Parse(ConfigurationManager.AppSettings["PageSize"]);
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
//不让浏览器缓存
context.Response.Buffer = true;
context.Response.ExpiresAbsolute = DateTime.Now.AddDays(-1);
context.Response.AddHeader("pragma", "no-cache");
context.Response.AddHeader("cache-control", "");
context.Response.CacheControl = "no-cache";
string result = "";
if (context.Request.Params["getPageCount"] != null) result = GetPageCount();
if (context.Request.Params["pageIndex"] != null)
{
string pageindex = context.Request.Params["pageIndex"];
//if (context.Cache.Get(pageindex) != null)
// result = context.Cache.Get(pageindex).ToString();
//else
//{
// result = GetPageData(context.Request.Params["pageIndex"]);
// context.Cache.Add(
// pageindex,
// result,
// null,
// DateTime.Now.AddMinutes(1),
// System.Web.Caching.Cache.NoSlidingExpiration,
// System.Web.Caching.CacheItemPriority.Default,
// null);
//}
result = GetPageData(context.Request.Params["pageIndex"]);
}
context.Response.Write(result);
}
private string GetPageData(string p)
{
int PageIndex = int.Parse(p);
string sql;
if (PageIndex == 1)
sql = "select top " + PageSize.ToString() + " * from Orders order by OrderID desc";
else
sql = "select top " + PageSize.ToString() + " * from Orders where OrderID not in(select top " + ((PageIndex - 1) * PageSiz
<!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>test2</title>
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script src="js/Gonneng.js" type="text/javascript"></script>
<script src="js/ajaxfn.js" type="text/javascript"></script>
</head>
<body>
<div>
<div>
<br />
<input id="first" type="button" value=" << " /><input id="previous" type="button"
value=" < " /><input id="next" type="button" value=" > " /><input id="last" type="button"
value=" >> " />
<span id="pageinfo"></span>
<ul id="datas">
<li id="template">
<span id="OrderID">
订单ID
</span>/
<span id="CustomerID">
客户ID
</span>
<span id="EmployeeID">
雇员ID
</span>/
<span id="OrderDate">
订购日期
</span>/
<span id="ShippedDate">
发货日期
</span>/
<span id="ShippedName">
货主名称
</span>/
<span id="ShippedAddress">
货主地址
</span>/
<span id="ShippedCity">
货主城市
</span>/
<span id="more">
更多信息
</span>
</li>
</ul>
</div>
<div id="load" style="left: 0px; position: absolute; top: 0px; background-color: red">
LOADING....
</div>
<input type="hidden" id="pagecount" />
</div>
</body>
</html>
Handler.ashx
<%@ WebHandler Language="C#" Class="jQueryJSON.Handler" %>
using System;
using System.Data;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Configuration;
using System.Data.SqlClient;
using System.Text;
using System.Xml;
using NetServ.Net.Json;
namespace jQueryJSON
{
/// <summary>
/// $codebehindclassname$ 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/json/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Handler : IHttpHandler
{
string dbfile = ConfigurationManager.AppSettings["conn"].ToString();
readonly int PageSize = int.Parse(ConfigurationManager.AppSettings["PageSize"]);
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
//不让浏览器缓存
context.Response.Buffer = true;
context.Response.ExpiresAbsolute = DateTime.Now.AddDays(-1);
context.Response.AddHeader("pragma", "no-cache");
context.Response.AddHeader("cache-control", "");
context.Response.CacheControl = "no-cache";
string result = "";
if (context.Request.Params["getPageCount"] != null) result = GetPageCount();
if (context.Request.Params["pageIndex"] != null)
{
string pageindex = context.Request.Params["pageIndex"];
//if (context.Cache.Get(pageindex) != null)
// result = context.Cache.Get(pageindex).ToString();
//else
//{
// result = GetPageData(context.Request.Params["pageIndex"]);
// context.Cache.Add(
// pageindex,
// result,
// null,
// DateTime.Now.AddMinutes(1),
// System.Web.Caching.Cache.NoSlidingExpiration,
// System.Web.Caching.CacheItemPriority.Default,
// null);
//}
result = GetPageData(context.Request.Params["pageIndex"]);
}
context.Response.Write(result);
}
private string GetPageData(string p)
{
int PageIndex = int.Parse(p);
string sql;
if (PageIndex == 1)
sql = "select top " + PageSize.ToString() + " * from Orders order by OrderID desc";
else
sql = "select top " + PageSize.ToString() + " * from Orders where OrderID not in(select top " + ((PageIndex - 1) * PageSiz
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