ajax简单应用代码

作者：袖梨 2022-06-25

ajax简单应用代码

@ webhandler language="c#" class="handler" %>

using system;
using system.web;
using system.collections.generic;
using system.data;

public class handler : ihttphandler
{
public void getpage( httpcontext context)
{
int pagenum = convert.toint32(context.request["pagenum"]);

pagenum++;
if (pagenum {
dataset1.productdatatable cachedata =

(dataset1.productdatatable)context.cache["cachekey"];
if (cachedata == null)
{
cachedata = new

dataset1tableadapters.producttableadapter().getdatabypriceasc(1, 15);
context.cache.insert("cachekey", cachedata, null,

system.web.caching.cache.noabsoluteexpiration, timespan.fromseconds

(80));
}
list news = new list();
for (int i = (pagenum * 5) - 4; i {
dataset1.productrow row = cachedata[i - 1];
string s = link.toproduct(row.productid.tostring());
news.add(new product()
{
name = row.name,
description = row.description,
price = row.price.tostring(),
thumbnail = row.thumbnail,
path = s
});

}
system.web.script.serialization.网页特效serializer jss =

new system.web.script.serialization.网页特效serializer();
context.response.write(jss.serialize(news));
}

else
{

var data = new

dataset1tableadapters.producttableadapter().getdatabypriceasc((pagenum *

5) - 4, pagenum * 5);

list news = new list();
for (int i =0; i {
dataset1.productrow row = data[i];
string s = link.toproduct(row.productid.tostring());
news.add(new product()
{
name = row.name,
description = row.description,
price = row.price.tostring(),
thumbnail = row.thumbnail,
path = s
});

}
system.web.script.serialization.javascriptserializer jss

= new system.web.script.serialization.javascriptserializer();
context.response.write(jss.serialize(news));

}

}
public void processrequest (httpcontext context)
{
context.response.contenttype = "text/plain";
string action = context.request["action"];
if (action == "getpage")
{
int allcount = new

dataset1tableadapters.producttableadapter().getcount().value;
context.response.write(allcount);

}
else if (action == "getpagedateasc")
{

getpage("getpagedateasc", context);
}
else if (action == "getpagedatedesc")
{
getpage("getpagedatedesc", context);
}

}

public bool isreusable
{
get
{
return false;
}
}

}
public class product
{
public string name { set; get; }
public string description { set; get; }
public string price { set; get; }
public string thumbnail { set; get; }
public string path { set; get; }

}

html代码//http://www.*3p*p*t.com/design/asp教程x/38279.html

"">

http://www.***w3.org/1999/xhtml">

rel="stylesheet" type="text/css" />

children/message-balloons/page=" + parseint(this.innerhtml);
}
});
}

var data;
$(function () {
$.post("handler.ashx", { "action": "getpage" }, function

(data123, status) {
data=data123;
initdata(0);

});

});

function pageselectcallback(page_id, jq) {
initdata(page_id);
return false;
};

function initdata(pageindx) {

$.post("handler.ashx", { "action": "getpagedate",

"pagenum": pageindx }, function (data, status) {

if (status == "success") {
var datas = $.parsejson(data);
$("#myul").empty();
for (var i = 0; i var p = datas[i];
var li = $("

" + " class='producttitle'> " + "" + "" +p.description+" class='detailsection'>+ price:"+p.price+" ");

$("#myul").append(li);

}

};

});

$("#pagination").pagination(data, {
callback: pageselectcallback,
prev_text: ' next_text: '下一页 >>',
items_per_page: 5,
num_display_entries: 4,
current_page: pageindx,
num_edge_entries: 1
});
createlink();
}