我的前台代码是

  Ext.onReady(function() {
            var itemsPerPage = 1;
            var store = Ext.create('Ext.data.Store', {
            autoLoad: { start: 0, limit: itemsPerPage },
                fields: ['id', 'name', 'age'],
                pageSize: itemsPerPage,
                proxy: {
                    type: 'ajax',
                    url: 'Handler1.ashx',
                    reader: {
                        type: 'json',
                        root: 'rows',
                        totalProperty: 'results'
                    }
                }

            });
            
            

            Ext.create('Ext.grid.Panel', {
                title: 'Paging',
                renderTo: Ext.getBody(),
                width: 400,
                height: 350,
                frame: true,
                store: store,
                columns: [
                { header: 'id', width: 30, dataIndex: 'id', sortable: true },
                { header: 'name', width: 80, dataIndex: 'name', sortable: true },
                { header: 'age', width: 80, dataIndex: 'age', sortable: true }
                ],
                bbar: [
                {
                    xtype: 'pagingtoolbar',
                    store: store,
                    displayInfo: true
                }
                ]
            });
            store.loadPage(1);

        });

后台：

  context.Response.ContentType = "text/plain";
            //string jsonstr="{ 'value': 'peter', 'text':'zhongkang'}";
            string jsonstr = "{result:6,rows:[{id:2,name:'mary',age:12},{id:3,name:'zhongkang',age:22},{id:4,name:'kang',age:22},{id:5,name:'zhongkang',age:22}]}";
            context.Response.Write(jsonstr);

我想请教各位大神们，如何分页呢，后台是如何操作的呢，网上好多资料都是千篇一律的，谢谢了！

现在是数据能从后台读出来了，但就是不能分页，asp.net使用grid需要注意什么吗？最好给点代码，让我参考一下，谢谢