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GridPanel绑定后台数据同时分页demo

2011-05-15 08:09 309 查看

前台页面:

<head>
<title>绑定后台数据</title>
<script type="text/javascript" src="ext-3.1.1/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="ext-3.1.1/ext-all.js"></script>
<link href="ext-3.1.1/resources/css/ext-all.css" rel="Stylesheet" />
<script type="text/javascript">
Ext.onReady(function() {
//begin

//创建列
var cm = new Ext.grid.ColumnModel(

[

{ header: "用户ID", name: "ID", sortable: true },
{ header: "用户名", name: "UserName", sortable: true },
{ header: "年龄", name: "Age", sortable: true }
]);
//创建recode格式
var recode = new Ext.data.Record.create([
{ name: "ID" },
{ name: "UserName" },
{ name: "Age" }
]);
//创建JSONreader
var reader = new Ext.data.JsonReader({
totalProperty: "count", // 该属性是指定记录集的总数（可选的）the property which contains the total dataset size (optional)
root: "root"
}, recode);

//创建store返回recode
var store = new Ext.data.Store({
url: "GetUserDataJson.aspx",//通过访问服务端的数据
reader: reader
})

store.load({params:{ start: 0, limit: 3}});//传递参数

var gridpanel = new Ext.grid.GridPanel({
title: "通过后台获取数据",
height: 500,
store: store,
cm: cm,
bbar: new Ext.PagingToolbar({pageSize:3,store:store,displayInfo:true,displayMsg:"显示第{0}~{1},共有{2}条记录",emptyMsg:"没有可显示的数据"}), //创建分页
renderTo: "gpanel"

});
//end

})
</script>
</head>
<body>
<div id="gpanel"></div>
</body>

后台页面：

<%
int start =int.Parse(Request.Params["start"].ToString());
int limit = int.Parse(Request.Params["limit"].ToString());

string sqlcon = ConfigurationManager.ConnectionStrings["mycon"].ConnectionString;
using (System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(sqlcon))
{

string sql = string.Format("select top {0} * from tuser where id not in( select top {1} id from tuser order by id desc) order by id desc",limit,start);
using (System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sql, con))
{
con.Open();
System.Data.SqlClient.SqlDataReader reader = cmd.ExecuteReader();
StringBuilder allStr = new StringBuilder();
allStr.Append(@"{root:[");
int i = 0;
while (reader.Read())
{
i++;

allStr.Append("{ID:'" + reader["Id"].ToString() + "',UserName:'" + reader["UserName"].ToString() + " ',Age:'" + reader["age"].ToString() + "'},");

}
allStr = allStr.Remove(allStr.Length - 1, 1);
allStr.Append(@"],count:'10'}");
%>
<%=allStr.ToString() %>

<%

}
}

%>

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