extjs4.2:点击第一个grid切换第二个grid的store

    onGridpanelSelect: function(selModel, record, index, options) {

		var sTblEn = record.get('TABLE_NAME_EN');
		sTblEn = sTblEn.toLowerCase();


		var grid_t = Ext.getCmp('griddata');  
		var store_t = Ext.data.StoreMgr.lookup('store_' + sTblEn);
		grid_t.store = store_t;
		grid_t.bindStore(store_t);
    }

另一种思路，切换store的url：

    onGridpanelSelect: function(selModel, record, index, options) {

		var sTblEn = record.get('TABLE_NAME_EN');
		sTblEn = sTblEn.toLowerCase();

		var storeDzm = Ext.data.StoreMgr.lookup('StoreData');
		storeDzm.getProxy().url = '/t0412/wm_qry/t_content?t_name=' + sTblEn;
		storeDzm.load();

    }