<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white"> 

    <mx:Array id="arr">
        <mx:Object label="item 1" data="1" />
        <mx:Object label="item 2" data="2" />
        <mx:Object label="item 3" data="3" />
        <mx:Object label="item 4" data="4" />
        <mx:Object label="item 5" data="5" />
        <mx:Object label="item 6" data="6" />
        <mx:Object label="item 7" data="7" />
        <mx:Object label="item 8" data="8" />
        <mx:Object label="item 9" data="9" />
        <mx:Object label="item 0" data="0" />
    </mx:Array> 

    <mx:ArrayCollection id="arrColl" source="{arr}" /> 

    <mx:DataGrid id="dataGrid"
            dataProvider="{arrColl}"
            alternatingItemColors="[white]"
            rowCount="6"
            horizontalGridLines="{hGL.selected}"
            verticalGridLines="{vGL.selected}"
            horizontalGridLineColor="red"
            verticalGridLineColor="red">
        <mx:columns>
            <mx:DataGridColumn id="labelCol" dataField="label" />
            <mx:DataGridColumn id="dataCol" dataField="data" />
        </mx:columns>
    </mx:DataGrid> 

    <mx:CheckBox id="hGL" label="horizontalGridLines" selected="true" />
    <mx:CheckBox id="vGL" label="verticalGridLines" selected="true" /> 

</mx:Application>