Fit Flex datagrid to data

<mx:DataGrid xmlns:mx="http://www.adobe.com/2006/mxml"
creationComplete="OnCreationComplete()"
paddingTop="0"
paddingBottom="0"
>

<mx:Script>
	<![CDATA[

	private function OnCreationComplete():void
	{
		//setRowHeight(10);
	}

    override protected function setRowHeight(v:Number):void
    {
		super.setRowHeight(v);
    }

	]]>
</mx:Script>

</mx:DataGrid>

<?xml version="1.0" encoding="utf-8"?>
<mx:DataGrid xmlns:mx="http://www.adobe.com/2006/mxml"
paddingTop="-3"
paddingBottom="-3"
resize="OnResize(event)"
>

<mx:Script>
	<![CDATA[
		import mx.containers.Panel;
	import mx.core.Application;
	import mx.events.ResizeEvent;

	protected function OnResize(event:ResizeEvent):void
	{
		this.invalidateDisplayList();
	}

/**
 *  @private
 *  Sizes and positions the column headers, columns, and items based on the
 *  size of the DataGrid.
 */
override protected function updateDisplayList(unscaledWidth:Number,
                                              unscaledHeight:Number):void
{
    if( this.collection.length > 0 ) // so don't divide by zero
    {
    	var appHeight:Number = Application.application.height;
    	var appMinusMenuHeight:Number = appHeight - Application.application.hboxPrintBar.height;
    	var boxHeight:Number = Application.application.vboxViewAll.height;
    	if( boxHeight > 0 )
    	{
    		var gridHeight:Number = (appMinusMenuHeight - this.headerHeight) * 0.93;
    		var calcHeight:Number = gridHeight / this.collection.length;
    		var calcHeightFloor:Number = Math.floor( calcHeight );
    		setRowHeight( calcHeightFloor );
    		//var p:Panel = this.parent as Panel;
    		//p.title = calcHeightFloor.toString();
    		if( calcHeightFloor <= 10 )
    			this.setStyle("fontSize",calcHeightFloor);
    	}
    }
    super.updateDisplayList(unscaledWidth,unscaledHeight);
}

	]]>
</mx:Script>

</mx:DataGrid>

myDataGrid.dataProvider = myArray;
myGrid.rowHeight = Math.floor((myGrid.height - myGrid.headerHeight)/myArray.length);