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',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。