flexdatagird2

    <mx:ArrayCollection id="arrColl" source="{arr}" />
 
    <mx:DataGrid id="dataGrid"
            dataProvider="{arrColl}"
            alternatingItemColors="[white]"
             rowHeight="20"
              columnWidth="20"
               verticalScrollPolicy="off"
               showHeaders="false"
            horizontalGridLines="{hGL.selected}"
            verticalGridLines="{vGL.selected}"
            horizontalGridLineColor="red"
            verticalGridLineColor="red"
             height="340"
              width="340">
        <mx:columns>
            <mx:DataGridColumn id="l1" dataField="l1" />
            <mx:DataGridColumn id="l2" dataField="l2" />
            <mx:DataGridColumn id="l3" dataField="l3" />
            <mx:DataGridColumn id="l4" dataField="l4" />
            <mx:DataGridColumn id="l5" dataField="l5" />
            <mx:DataGridColumn id="l6" dataField="l6" />
            <mx:DataGridColumn id="l7" dataField="l7" />
            <mx:DataGridColumn id="l8" dataField="l8" />
            <mx:DataGridColumn id="l9" dataField="l9" />
            <mx:DataGridColumn id="l10" dataField="l10" />
            <mx:DataGridColumn id="l11" dataField="l11" />
            <mx:DataGridColumn id="l12" dataField="l12" />
            <mx:DataGridColumn id="l13" dataField="l13" />
            <mx:DataGridColumn id="l14" dataField="l14" />
            <mx:DataGridColumn id="l15" dataField="l15" />
            <mx:DataGridColumn id="l16" dataField="l16" />
            <mx:DataGridColumn id="l17" dataField="l17" />
        </mx:columns>
    </mx:DataGrid>
 
    <mx:CheckBox id="hGL" label="horizontalGridLines" selected="true" />
    <mx:CheckBox id="vGL" label="verticalGridLines" selected="true" />
 
</mx:Application>