Extjs+asp.net json数据正常，前台不显示

Question

json数据正解，前台不显示
{
"recordCount":"3","result":[
{"id":"0","name":"name0","descn":"descn0","birthday":"2015/10/17 20:56:45","gender":"男D"},
{"id":"1","name":"name1","descn":"descn1","birthday":"2015/10/17 20:56:45","gender":"男D"},
{"id":"2","name":"name2","descn":"descn2","birthday":"2015/10/17 20:56:45","gender":"男D"}
]
} 这是json数据

Ext.onReady(function () {
var cm = new Ext.grid.ColumnModel([
{ header: 'id', dataIndex: 'id' },
{ header: 'name', dataIndex: 'name' },
{ header: 'descn', dataIndex: 'descn' },
{ header: 'birthday', dataIndex: 'birthday' },
{ header: 'gender', dataIndex: 'gender' },
]);
var store = new Ext.data.Store({
proxy: new Ext.data.HttpProxy({ url: "Data/WebGetData.aspx"}),
reader:new Ext.data.JsonReader({
totalProperty: 'recordCount',
root: 'result'
}, [
{ name: 'id' },
{ name: 'name' },
{ name: 'descn' },
{ name: 'birthday',type:'date',dateFormat:'Y-m-d H:i:s'},
{ name: 'gender' },
])

        });

       // store.load();

        var grid = new Ext.grid.GridPanel({
            store: store,
            cm: cm,
            renderTo:'grid',
        });

        store.load({
            callback: function () {
                alert(store.getCount());
            }
        });
    });

Answer 1

1. > ##

# __