EXTJS学习系列提高篇:第十六篇(转载)作者殷良胜,ext2.2打造全新功能grid系列--显示列表篇
在这个显示篇里,简单的从后台绑定数据,包括分页和刷新的功能.
先看看图片展示的效果:
1,下面把页面代码完整复制:
Code<%@ Page Language="C#" AutoEventWireup="true" CodeFile="gridShow.aspx.cs" Inherits="gridShow" %>
<!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 runat="server">
<title>无标题页</title>
<link rel="Stylesheet" type="text/css" href="ExtJS/resources/css/ext-all.css" />
<link rel="Stylesheet" type="text/css" href="ExtJS/resources/css/xtheme-green.css" />
<script type="text/javascript" src="ExtJS/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="ExtJS/ext-all.js"></script>
<script type="text/javascript" src="ExtJS/ext-lang-zh_CN.js"></script>
<style type="text/css">
.panel_icon11 { background-image:url(images/first.gif)}
.center_icon { background-image:url(images/center.png)}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<script type="text/javascript">
function ready()
{
var url = "jsonGrid.aspx?Param=select";
var sm = new Ext.grid.CheckboxSelectionModel();
var cm = new Ext.grid.ColumnModel
([
sm,new Ext.grid.RowNumberer({header:"编号",width:50}),
{header:"编号",dataIndex:"ID",width:10,hidden:true},
{header:"标题",dataIndex:"TypeCName",width:100,editor:new Ext.form.TextField()},
{header:"英文名称",dataIndex:"TypeEName",width:100,editor:new Ext.form.TextField()},
{header:"状态",dataIndex:"DelFlag",width:100,renderer:function(value){if(value==false) {return "显示";} else {return "隐藏";}}},
{header:"添加日期",dataIndex:"AddDate",width:100,renderer:Ext.util.Format.dateRenderer('Y年m月d日')}
]);
cm.defaultSortable = true;
var fields =
[
{name:"ID"},
{name:"TypeCName"},
{name:"TypeEName"},
{name:"DelFlag"},
{name:"AddDate"}
];
var store = new Ext.data.Store
({
proxy:new Ext.data.HttpProxy({url:url}),
reader:new Ext.data.JsonReader({totalProperty:"totalPorperty",root:"root",fields:fields})
});
store.load({params:{start:0,limit:15}});
var pagingBar = new Ext.PagingToolbar
({
displayInfo:true,emptyMsg:"没有数据显示",displayMsg:"显示从{0}条数据到{1}条数据，共{2}条数据",
store:store,
pageSize:15
});
var grid = new Ext.grid.GridPanel
({
id:"MenuGridPanel",
renderTo:document.body,
layout:"fit",
frame:true,
border:true,
width:900,
height:450,
autoScroll:true,
store:store,
sm:sm,
cm:cm,
viewConfig:{forceFit: true},
title:'<img style="height:auto; width:auto;" src="images/first.gif" /> Ext2.2全新功能版系列之--显示列表',
bbar:pagingBar
});
}
</script>
<script type="text/javascript">
Ext.onReady(ready);
</script>
</div>
</form>
</body>
</html>
2,把涉及到的后台代码贴出来供大家参考
using Ext;
using System.Collections.Generic;
using Newtonsoft.Json;
public partial class jsonGrid : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
#region 分页
int pagesize = 20;
int start = 1;
string field, asc_desc;
if (string.IsNullOrEmpty(Request["sort"]))
{
field = "ID";
asc_desc = "desc";
}
else
{
field = Request["sort"];
asc_desc = Request["dir"];
}
if (!string.IsNullOrEmpty(Request["limit"]))
{
pagesize = int.Parse(Request["limit"]);
start = int.Parse(Request["start"]);
}
start = start / pagesize;
start += 1;
#endregion
string param = Request["Param"];
switch (param)
{
case "select":
Select(field, asc_desc, pagesize, start);
break;
case "search":
break;
default:
break;
}
}
void Select(string field, string asc_desc, int pagesize, int start)
{
string json = "";
try
{
DataSet ds = CommonUtil.PaginationByTableName(field, asc_desc, pagesize, start, "TypeTable");
if (ds != null && ds.Tables[0].Rows.Count > 0)
{
json = CommonUtil.GetJsonString(ds);
int count = CommonUtil.GetCountByTableName("TypeTable");
json = "{totalPorperty:" + count + ",root:" + json + "}";
}
}
catch (Exception ee)
{
string error = ee.Message;
}
Response.Write(json);
}
}
3,数据表生成语句,在提高篇第七篇里也能够找到,这里再贴出来一次
CREATE TABLE [dbo].[TypeTable](
[ID] [int] IDENTITY(1,1) NOT NULL,
[PID] [int] NULL,
[TypeEName] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL,
[TypeCName] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL,
[DelFlag] [bit] NULL CONSTRAINT [DF_TypeTable_DelFlag] DEFAULT ((0)),
[AddDate] [datetime] NULL CONSTRAINT [DF_TypeTable_AddDate] DEFAULT (getdate()),
CONSTRAINT [PK_TypeTable] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
