Jquery easyui+Jsonp+asp.net+翻页 事件版
说明
Jsonp原理介绍:http://www.jb51.net/article/31167.htm
说明:这个是纯事件翻页,如果正常开发(小弟才疏学浅自己认为的),是需要靠参数传递来翻页不需要自己定义翻页事件,我这里是为了了解才这样做的,具体请看Test1/Default.aspx.exclude
构造文件
basic.html
显示页面
<!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>
<meta charset="UTF-8"/>
<title>用户信息列表</title>
<link rel="stylesheet" type="text/css" href="../themes/default/easyui.css"/>
<link rel="stylesheet" type="text/css" href="../themes/icon.css"/>
<link rel="stylesheet" type="text/css" href="../demo/demo.css"/>
<script type="text/javascript" src="../JS/jquery.min.js"></script>
<script type="text/javascript" src="../JS/jquery.easyui.min.js"></script>
</head>
<body>
<h2>用户信息列表</h2>
<div class="demo-info" style="margin-bottom:10px;">
<div class="demo-tip icon-tip"></div>
<div>全部用户信息列表.</div>
</div>
<div style="margin:10px 0">
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="Add()">Add</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="Update()">Update</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="Delete()">Delete</a>
</div>
<table id="tg" class="easyui-datagrid" title="用户信息列表" style="700px;height:350px" data-options="
singleSelect:true,
collapsible:true,
autoRowHeight:false,
fitColumns:true,
pagination:true,
pageSize:10,
pageList:[10,20,50,100],
rownumbers:true,
toolbar:'#tb',
striped:true
">
<thead>
<tr>
<th data-options="field:'ck',checkbox:true"></th>
<th data-options="field:'userId',80">用户ID</th>
<th data-options="field:'userName',100">用户名称</th>
<th data-options="field:'age',80,align:'right'">年龄</th>
<th data-options="field:'phone',80">手机</th>
<th data-options="field:'address',250">地址</th>
</tr>
</thead>
</table>
<div id="update" class="easyui-window" title="修改用户信息" data-options="modal:true,closed:true,collapsible:false,minimizable:false,maximizable:false,iconCls:'icon-save'" style="500px;height:300px;padding:10px 50px;">
<form id="from_user" name="from_user" style="100%;height:100%">
<table style="100%;height:100%">
<tr>
<td>用户ID:</td>
<td><input class="easyui-validatebox" type="text" id="txtuserId" name="txtuserId" data-options="required:true" disabled="disabled" readonly="readonly"/></td>
</tr>
<tr>
<td>用户名称:</td>
<td><input class="easyui-validatebox" type="text" id="txtuserName" name="txtuserName" data-options="required:true,validType:'length[2,10]'"/></td>
</tr>
<tr>
<td>年龄:</td>
<td><input class="easyui-numberbox" id="txtage" name="txtage" data-options="required:true"/></td>
</tr>
<tr>
<td>手机:</td>
<td><input class="easyui-validatebox" type="text" id="txtphone" name="txtphone" data-options="required:true,validType:'phone'"/></td>
</tr>
<tr>
<td>地址:</td>
<td><input class="easyui-validatebox" type="text" id="txtaddress" name="txtaddress" data-options="validType:'length[0,20]'"/></td>
</tr>
<tr>
<td>用户类型:</td>
<td><input class="easyui-combobox" id="txttype" name="txttype" data-options="valueField:'id',textField:'text',panelHeight:'auto',editable:false,value:'1'"/></td>
</tr>
<tr>
<td colspan="2">
<a id="save" href="javascript:void(0)" class="easyui-linkbutton">Save</a>
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="cancel()">Cancel</a>
</td>
</tr>
</table>
</form>
</div>
<div id="tb" style="height:auto;">
<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-add',plain:true" onclick="Add()">Add</a>
<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-edit',plain:true" onclick="Update()">Update</a>
<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-remove',plain:true" onclick="Delete()">Delete</a>
</div>
<script type="text/javascript">
$(document).ready(function(){
loadData(0,10);
loadCombobox();
$('#tg').datagrid('getPager').pagination({
onSelectPage:SelectPage,
onBeforeRefresh:SelectPage,
beforePageText:'第',
afterPageText:'页 共{pages}页',
displayMag:'当前显示 {from} - {to} 条记录 共 {total} 条记录'
});
});
function loadCombobox(){
$.ajax({
type:"get",
async:false,
url:'Handler.ashx?cmd=GetUserType',
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
$('#txttype').combobox('loadData',json);
},
error:function(error,state){
$.messager.alert('系统提示',error+" -1 "+state,'error');
}
});
}
function pagerFilter(data){
if (typeof data.length == 'number' && typeof data.splice == 'function'){ // is array
data = {
total: data.length,
rows: data
}
}
var dg = $(this);
var opts = dg.datagrid('options');
var pager = dg.datagrid('getPager');
pager.pagination({
onSelectPage:function(pageNum, pageSize){
opts.pageNumber = pageNum;
opts.pageSize = pageSize;
// pager.pagination('refresh',{
// pageNumber:pageNum,
// pageSize:pageSize
//
// });
loadData((opts.pageNumber-1)*parseInt(opts.pageSize),start + parseInt(opts.pageSize));
}
});
if (!data.originalRows){
data.originalRows = (data.rows);
}
var start = (opts.pageNumber-1)*parseInt(opts.pageSize);
var end = start + parseInt(opts.pageSize);
data.rows = (data.originalRows.slice(start, end));
return data;
}
function SelectPage(pageNum, pageSize){
var opts = $('#tg').datagrid('options');
opts.pageNumber = pageNum;
opts.pageSize = pageSize;
loadData((opts.pageNumber-1)*parseInt(opts.pageSize),(opts.pageNumber-1)*parseInt(opts.pageSize) + parseInt(opts.pageSize));
}
function loadData(start,end){
$.ajax({
type:"get",
async:false,
url:'Handler.ashx?cmd=GetUserName&start='+start+'&end='+end,
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
$('#tg').datagrid('loadData',json);
},
error:function(error,state){
$.messager.alert('系统提示',error+" 0 "+state,'error');
}
});
}
function Add(){
cancel();
$('#save').unbind().bind('click',UserSave);
$('#update').window('open');
}
function Update(){
var row=$('#tg').datagrid('getSelected');
if(row){
$('#txtuserId').val(row.userId);
$.ajax({
type:'get',
async:false,
url:'Handler.ashx',
data:"cmd=GetUser&userId="+escape(row.userId),
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
$('#txtuserName').val(json.userName);
// $('#txtage').val(json.age);
// $('input[name="txtage"]').attr('value',row.age);
$('#txtage').numberbox('setValue',json.age);
$('#txtphone').val(json.phone);
$('#txtaddress').val(json.address);
$('#txttype').combobox('setValue',json.type);
$('#save').unbind().bind('click',UserUpdate);
$('#update').window('open');
},
error:function(error,state){
$.messager.alert('系统提示',error+" 1 "+state,'error');
}
});
}
}
function Delete(){
var row=$('#tg').datagrid('getSelected');
if(row){
$.messager.confirm('系统提示','是否删除该用户信息?',function(result){
if(result){
UserDelete(row.userId)
}
});
}
}
function UserSave(){
if(!$('#from_user').form('validate')){
return;
}
var txtuserId=$('#txtuserId').val();
var txtuserName=$('#txtuserName').val();
var txtage=$('#txtage').val();
var txtphone=$('#txtphone').val();
var txtaddress=$('#txtaddress').val();
var txttype=$('#txttype').combobox('getValue');
$.ajax({
type:'get',
async:false,
url:'Handler.ashx',
data:"cmd=SaveUserName&userId="+escape($('#txtuserId').val())+"&userName="+escape($('#txtuserName').val())+"&age="+escape($('#txtage').val())+
"&phone="+escape($('#txtphone').val())+"&address="+escape($('#txtaddress').val())+"&type="+escape($('#txttype').combobox('getValue')),
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
// $('#tg').datagrid('loadData',json);
SelectPage($('#tg').datagrid('options').pageNumber,$('#tg').datagrid('options').pageSize);
$.messager.alert('系统提示','添加用户信息成功.','info');
$('#update').window('close');
},
error:function(error,state){
$.messager.alert('系统提示',error+" 1 "+state,'error');
}
});
}
function UserUpdate(){
if(!$('#from_user').form('validate')){
return;
}
var txtuserId=$('#txtuserId').val();
var txtuserName=$('#txtuserName').val();
var txtage=$('#txtage').val();
var txtphone=$('#txtphone').val();
var txtaddress=$('#txtaddress').val();
var txttype=$('#txttype').combobox('getValue');
$.ajax({
type:'get',
async:false,
url:'Handler.ashx',
data:"cmd=UpdateUserName&userId="+escape($('#txtuserId').val())+"&userName="+escape($('#txtuserName').val())+"&age="+escape($('#txtage').val())+
"&phone="+escape($('#txtphone').val())+"&address="+escape($('#txtaddress').val())+"&type="+escape($('#txttype').combobox('getValue')),
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
// $('#tg').datagrid('loadData',json);
SelectPage($('#tg').datagrid('options').pageNumber,$('#tg').datagrid('options').pageSize);
$.messager.alert('系统提示','更新用户信息成功.','info');
$('#update').window('close');
},
error:function(error,state){
$.messager.alert('系统提示',error+" 2 "+state,'error');
}
});
}
function UserDelete(userId){
if(!userId) return false;
$.ajax({
type:'get',
async:false,
url:'Handler.ashx',
data:"cmd=DeleteUserName&userId="+escape(userId),
dataType:"jsonp",
jsonp:'callback',
jsonpCallback:'_dg_loadData',
success:function(json){
// $('#tg').datagrid('loadData',json);
SelectPage($('#tg').datagrid('options').pageNumber,$('#tg').datagrid('options').pageSize);
$.messager.alert('系统提示','删除用户信息成功.','info');
$('#update').window('close');
},
error:function(error,state){
$.messager.alert('系统提示',error+" 3 "+state,'error');
}
});
}
function cancel(){
$('#txtuserId').val('');
$('#txtuserName').val('');
$('#txtage').val('');
$('input[name="txtage"]').attr('');
$('#txtphone').val('');
$('#txtaddress').val('');
$('#txttype').combobox('setValue','1');
$('#update').window('close');
}
</script>
</body>
</html>
Handler.ashx
操作数据页面
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
using System.Reflection;
using System.Collections.Generic;
using System.Transactions;
public class Handler : IHttpHandler {
public List<User> users = new List<User>();
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "application/jsonp";
string cmd = context.Request["cmd"];
if (!string.IsNullOrEmpty(cmd))
{
MethodInfo Method = this.GetType().GetMethod(cmd,BindingFlags.NonPublic|BindingFlags.Instance);
if (Method!=null)
{
Method.Invoke(this, new object[] { context });
}
}
}
public bool IsReusable {
get {
return false;
}
}
void GetUserType(HttpContext context)
{
string callback = context.Request["callback"];
string json = callback + "([" +
"{"id":1,"text":"普通用户"}," +
"{"id":2,"text":"高级用户"}," +
"{"id":3,"text":"铜牌用户"}," +
"{"id":4,"text":"银牌用户"}," +
"{"id":5,"text":"金牌用户"}," +
"{"id":6,"text":"钻石用户"}," +
"])";
context.Response.Write(json);
context.Response.End();
}
void GetUserName(HttpContext context)
{
string callback = context.Request["callback"];
users = context.Cache["users"] as List<User>;
if (users==null)
{
users = new List<User>();
}
string json = callback + "({"total":" + users.Count + ","rows":[";
int start = int.Parse(context.Request["start"]);
int end = int.Parse(context.Request["end"]);
if (end>users.Count)
{
end = users.Count;
}
for (int i = start; i < end; i++)
{
User user = users[i];
json += "{"userId":" + user.userId + ","userName":"" + user.userName + "","age":" + user.age + ","phone":"" + user.phone + "","address":"" + user.address + ""},";
}
json += "]})";
//string json = callback+"({"total":28,"rows":["+
// "{"userId":1,"userName":"A1","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":2,"userName":"A2","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":3,"userName":"A3","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":4,"userName":"A4","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":5,"userName":"A5","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":6,"userName":"A6","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":7,"userName":"A7","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":8,"userName":"A8","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":9,"userName":"A9","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":10,"userName":"A10","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":11,"userName":"A11","age":18,"phone":"15612345678","address":"XXXXXXX"},"+
// "{"userId":12,"userName":"A12","age":18,"phone":"15612345678","address":"XXXXXXX"}"+
// "]})";
context.Response.Write(json);
context.Response.End();
}
void UpdateUserName(HttpContext context)
{
string callback = context.Request["callback"];
users = context.Cache["users"] as List<User>;
if (users == null)
{
users = new List<User>();
}
string userId = context.Request["userId"];
string userName = context.Request["userName"];
string age = context.Request["age"];
string phone = context.Request["phone"];
string address = context.Request["address"];
string type = context.Request["type"];
//string json = callback + "({"total":" + users.Count + ","rows":[";
foreach (User user in users)
{
if (user.userId == int.Parse(userId))
{
user.userName = userName;
user.age = int.Parse(age);
user.phone = phone;
user.address = address;
user.type = int.Parse(type);
}
}
context.Cache.Remove("users");
context.Cache.Insert("users",users);
//foreach (User user in users)
//{
// json += "{"userId":" + user.userId + ","userName":"" + user.userName + "","age":" + user.age + ","phone":"" + user.phone + "","address":"" + user.address + ""},";
//}
//json += "]})";
context.Response.Write(callback + "(1)");
context.Response.End();
}
void SaveUserName(HttpContext context)
{
string callback = context.Request["callback"];
users = context.Cache["users"] as List<User>;
if (users == null)
{
users = new List<User>();
}
string userId = context.Request["userId"];
string userName = context.Request["userName"];
string age = context.Request["age"];
string phone = context.Request["phone"];
string address = context.Request["address"];
string type = context.Request["type"];
//string json = callback + "({"total":" + users.Count + ","rows":[";
using (TransactionScope transaction = new TransactionScope())
{
User _users = new User(users[users.Count - 1].userId + 1, userName, int.Parse(age), phone, address,int.Parse(type));
users.Add(_users);
context.Cache.Remove("users");
context.Cache.Insert("users", users);
transaction.Complete();
}
//foreach (User user in users)
//{
// json += "{"userId":" + user.userId + ","userName":"" + user.userName + "","age":" + user.age + ","phone":"" + user.phone + "","address":"" + user.address + ""},";
//}
//json += "]})";
context.Response.Write(callback + "(1)");
context.Response.End();
}
void DeleteUserName(HttpContext context)
{
string callback = context.Request["callback"];
users = context.Cache["users"] as List<User>;
if (users == null)
{
users = new List<User>();
}
string userId = context.Request["userId"];
//string json = callback + "({"total":" + users.Count + ","rows":[";
User _user = null;
foreach (User user in users)
{
if (user.userId == int.Parse(userId))
{
_user = user;
}
}
users.Remove(_user);
context.Cache.Remove("users");
context.Cache.Insert("users", users);
//foreach (User user in users)
//{
// json += "{"userId":" + user.userId + ","userName":"" + user.userName + "","age":" + user.age + ","phone":"" + user.phone + "","address":"" + user.address + ""},";
//}
//json += "]})";
context.Response.Write(callback+"(1)");
context.Response.End();
}
void GetUser(HttpContext context)
{
string callback = context.Request["callback"];
users = context.Cache["users"] as List<User>;
if (users == null)
{
users = new List<User>();
}
string userId = context.Request["userId"];
string json = callback + "(";
User _user = null;
foreach (User user in users)
{
if (user.userId == int.Parse(userId))
{
_user = user;
}
}
json += "{"userId":" + _user.userId + ","userName":"" + _user.userName + "","age":" + _user.age + ","phone":"" + _user.phone + "","address":"" + _user.address + "","type":"" + _user.type + ""}";
json += ")";
context.Response.Write(json);
context.Response.End();
}
}
Global.asax
初始化数据
<%@ Application Language="C#" %>
<script runat="server">
void Application_Start(object sender, EventArgs e)
{
// 在应用程序启动时运行的代码
System.Collections.Generic.List<User> users = new System.Collections.Generic.List<User>();
for (int i = 1; i <= 100; i++)
{
users.Add(new User(i, "A" + i, new Random().Next(20), "15612345678", "XXXXXX" + new Random().Next(100), new Random().Next(1, 6)));
}
//建立回调委托的一个实例
CacheItemRemovedCallback callBack = new CacheItemRemovedCallback(CacheItemRemoved);
HttpContext.Current.Cache.Insert("users", users, null, DateTime.Now.AddDays(1), TimeSpan.Zero, CacheItemPriority.High, callBack);
}
void CacheItemRemoved(string key, object value, CacheItemRemovedReason reason)
{
System.Collections.Generic.List<User> users = new System.Collections.Generic.List<User>();
if(HttpContext.Current.Cache[key] != null){
HttpContext.Current.Cache.Remove(key);
}
users.Add(new User(-1,"缓存已被清除",-1,"---","清除原因:"+reason,1));
HttpContext.Current.Cache.Insert(key, users);
}
void Application_End(object sender, EventArgs e)
{
// 在应用程序关闭时运行的代码
}
void Application_Error(object sender, EventArgs e)
{
// 在出现未处理的错误时运行的代码
}
void Session_Start(object sender, EventArgs e)
{
// 在新会话启动时运行的代码
}
void Session_End(object sender, EventArgs e)
{
// 在会话结束时运行的代码。
// 注意: 只有在 Web.config 文件中的 sessionstate 模式设置为
// InProc 时，才会引发 Session_End 事件。如果会话模式设置为 StateServer
// 或 SQLServer，则不会引发该事件。
}
</script>
完成
Ok,用事件翻页已经好了,下载Demo
