Ext.Net 1.x_Ext.Net.GridPanel之模拟2.x列汇总

这些天在群里混：看到网友的效果：列汇总

如何实现呢？

 写个JS统计

function GridSum() {
            var grid = Ext.getCmp('GpItem');
            var sumPrice = 0.00;
            var record = grid.record;
            grid.store.each(function (record) {
                sumPrice += record.data.Price;
            });
            var n = grid.getStore().getCount();
            var p = new Ext.data.Record({
                Name: "总计:",
                Price: ""+RMBMoney(sumPrice)+""
            })
            grid.store.insert(n, p);
            grid.store.commitChanges();
            GpItem.getView().getRow(n).style.backgroundColor &