Ext grid checkbox 分页 翻页 勾选 问题

          timeArray = new Array();    //临时数组变量
     var timeStatusBar = new Ext.ux.StatusBar({
             id: 'statusbar',
             defaultText: '选择时间列表',
     });
     var timeSelectModel = new Ext.grid.CheckboxSelectionModel({
         checkOnly:true,
         singleSelect:false,
         listeners:{
             rowselect:function(sm, rowIndex, record){  //选择事件，将time添加到timeArray中
                 var time = record.data.time;
                 if (!ArrayContains(timeArray, time)){
                 //timeArray中没有存储time，则添加到timeArray中
                     var link = '<a href="javascript:removeTime_result('+time+')"><img src="/NetMonitor/Images/common/delete.gif"/></a>';
                     ArrayAppendDesc(timeArray, time, [time, link]);
                     timeStore_result.loadData(timeArray);
                 }

             },
             rowdeselect:function(sm, rowIndex, record){  //取消选择事件,从timeArray中移除出去
                 //临时变量中存储了这个time,则从timeArray中移除出去
                 var time = record.data.time;
                 ArrayRemove(timeArray, time);
                 timeStore_result.loadData(timeArray);
             }
         }
     });
     var timeColumnModel = new Ext.grid.ColumnModel([
         {  header:'时间选择列表',dataIndex:'time',width:200,align:'center'},
         timeSelectModel
     ]);
     var timeRecordType = Ext.data.Record.create([{name:'time'}]);
     var timeStore = new Ext.data.Store({
         id:'timeStore',
         proxy:new Ext.data.DWRProxy(ExcelDaoService.getGridTime_ExcelDao,false),
         reader:new Ext.data.ListRangeReader({
             root:'data',
             totalProperty:'totalSize'
         },timeRecordType)
         ,
         listeners:{
             beforeload:function(){
                 timeStore.baseParams = {table:table};
             },
             load:function(){                                        //加载的时候，根据临时变量timeArray勾选
                 var records = new Array();
                 timeStore.each(function(record){
                     for(var i=0; i<timeArray.length; i++){
                         if(timeArray[i][0] == record.data.time){
                             records.push(record);
                         }
                     }
                 });
                 timeSelectModel.selectRecords(records, true);
             }
         },
         remoteSort:true
     });

     var pageTBar=new Ext.PagingToolbar({
         id:'pagingTbr',
         pageSize: 20,
         store:timeStore,
         afterPageText:'共{0}页',
         beforePageText:"当前页",
         lastText:"尾页",
         nextText:"下一页",
         prevText:"上一页",
         firstText:"首页"
     });
     var timeGrid = new Ext.grid.GridPanel({
         id:'timeGrid',
         tbar:timeStatusBar,
         bbar:pageTBar,
         cm:timeColumnModel,
         sm:timeSelectModel,
         store:timeStore,
         autoScroll:true,
         stripeRows:true,
         height:540
     });

Ext grid checkbox在翻页的过程中，会碰到之前勾选的数据，无法记录的情况，这时就应该使用一个临时array变量存储勾选的值，然后在grid每次load的时候，把每行数据与该array变量进行遍历判断，这样就能实现翻页保持勾选数据的效果。