前臺頁面：
代碼如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="gridShowTest.aspx.cs" Inherits="ExtPra.gridShowTest" %>
<!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>顯示gird</title>
<link rel="Stylesheet" type="text/css" href="ExtJS/resources/css/ext-all.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/build/locale/ext-lang-zh_CN.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<script type="text/javascript">
function ready()
{
Ext.BLANK_IMAGE_URL="ExtJS/docs/resources/s.gif"; //空白圖片設置為本地,否則按默認方式從官方網站下載(在聯網環境下)
var url="myGridJson.aspx?Param=select";
var sm=new Ext.grid.CheckboxSelectionModel();//復選按鈕
var cm=new Ext.grid.ColumnModel //列模版定義(該例中定義顯示數據庫表Employees中的四列)
([
sm,//在每行的第一列添加一個復選按鈕 ,
new Ext.grid.RowNumberer({header:"自動顯示行號",width:100}),//添加自動顯示行號的列
{header:'員工編號',dataIndex:'EmployeeID',sortable:true, width:100},
{header:'名字',dataIndex:'LastName',sortable:true,width:100,editor:new Ext.form.TextField()},
{header:'姓氏',dataIndex:'FirstName',sortable:true,width:100,editor:new Ext.form.TextField()},
{header:'出生日期',dataIndex:'BirthDate',sortable:true,width:100,renderer:Ext.util.Format.dateRenderer('Y年m月d日')} //,renderer:Ext.util.Format.dateRenderer('Y年m月d日')
]);
// cm.defaultSortable=true; //設置所有列是可以排序的
var fields= //字段
[
{name:"EmployeeID",mapping: 'EmployeeID'},
{name:"LastName",mapping: 'LastName'},
{name:"FirstName",mapping:'FirstName'},
{name:"BirthDate",mapping:'BirthDate',type:'date'}
];
//store 是Ext中數據存儲的和數據交換的緩沖區 在grid等控件中要使用store作為填充的數據源
var store=new Ext.data.Store //JsonReader支持分頁 totalProperty獲得記錄的總數 ,root是從服務器返回的json串
({
proxy:new Ext.data.HttpProxy({url:url}),//proxy告訴我們從哪里獲取數據
reader:new Ext.data.JsonReader //reader 告訴我們如何解析數據
({
totalProperty:"totalCount",root:"root",//totalCount
fields:fields //fields 告訴我們按照定義的規范進行解析 每行讀取4個數據,第一個是EmployeeID 第二個是LastName ...
}) //與ColumnModel中的dataIndex想對應,這樣ColumnModel就知道那列應該顯示那條數據了
// remoteSort:true //支持服務器端排序 設置 store.remoteSort = true ,會向后臺提交兩個參數 sort ,dir,sort排序字段 dir升序或降序
}); //此時不支持前臺排序，否則只是前臺排序
store.load({params:{start:0,limit:3}}); //對數據進行初始化 start表示起始頁 limit表示每頁大小,最好與分頁toolbar中的pageSize一致
var pagingBar=new Ext.PagingToolbar //分頁toolbar
({
displayInfo:true,
emptyMsg:"沒有數據顯示",
displayMsg:"顯示從{0}條數據到{1}條數據,共{2}條數據",
store:store,
pageSize:3 //客戶端的模擬分頁 可以再分頁欄中看到根據該pageSize和總記錄數(pageCount)計算得到的頁數 pageCount/pageSize
});
var grid=new Ext.grid.GridPanel
({
// el:"testGrid",
id:"MenuGrid",
title:"顯示列表",
// autoWidth:true,
autoHeight:true,
width:550,
//height:300, //千萬別忘了設置height,否則默認的height的值是0,顯示不了讀取的數據
renderTo:document.body,
layout:"fit",
frame:true,
border:true,
// autoScroll:true,
sm:sm, //GridPanel中的復選按鈕,可以全選所有的行,若沒有設置該屬性,則GridPanel得全選功能不能實現
cm:cm,
store:store,
// viewConfig:{forceFit: true},設置該屬性為true則grid中的列寬設置無效,grid會根據這些數值計算出比例，對各列分配寬度
bbar:pagingBar
});
grid.addListener('sortchange', sortchangeFn); //給grid增加一個'sortchange'事件,當發生排序改變的事件,啟動服務器端排序(即remoteSort:true)
//和重新加載數據( 即store.reload({params:{start:0,limit:3}}) )
function sortchangeFn(grid, sortinfo)
{
//alert('排序'+ sortinfo.field + "方向" + sortinfo.direction);
remoteSort:true
store.reload({params:{start:0,limit:3}}); //每次store.reload的時候,向后臺傳遞sort ,dir dir每點擊一次就會自動做相應的改變從desc->asc,asc->desc
}
}
Ext.onReady(ready);
</script>
<div id="testGrid">
</div>
</div>
</form>
</body>
</html>
后臺代碼：
代碼如下:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Collections.Generic;
using Newtonsoft.Json;
namespace ExtPra
{
public partial class myGridJson : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
#region 分頁
int pagesize = 20;
int start = 1;
string field, asc_desc;
if (string.IsNullOrEmpty(Request["sort"]))
{
field = "EmployeeID";
asc_desc = "asc";
}
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 strSql = string.Format("select EmployeeID, LastName,FirstName,BirthDate from Employees where EmployeeID between ({0}-1)*{1}+1 and {0}*{1} order by {2} {3} ",start,pagesize,field,asc_desc);
string strConnection = "Data Source=.;Initial Catalog=Northwind;User ID=sa;password=sa";
SqlConnection con = new SqlConnection(strConnection);
SqlDataAdapter da = new SqlDataAdapter(strSql, con);
DataSet ds = new DataSet();
da.Fill(ds, "Employees");
string json = "";
IList<Hashtable> mList = new List<Hashtable>();
try
{
foreach (DataRow row in ds.Tables[0].Rows)
{
Hashtable ht = new Hashtable();
foreach (DataColumn col in ds.Tables[0].Columns)
{
ht.Add(col.ColumnName, row[col.ColumnName]);
}
mList.Add(ht);
}
json = JavaScriptConvert.SerializeObject(mList);
}
catch (Exception ee)
{
string error = ee.Message;
}
// int count = ds.Tables[0].Rows.Count;
int count = 9;
json = "{totalCount:" + count + ",root:" + json + "}";
Response.Write(json);
Response.End();
}
}
}
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