Data access in List Based components

Hello ,
I am working with List Based components , List and a Combobox for practice purpose.
I had written a Event Listener as  :
public function handleList(event:ListEvent):void
Why is that both of them are having two different ways of accessing Data .
event.itemRenderer.data.toString() is for List and 
event.target.selectedItem.toString() is for ComboBox ?? 
and what i observered is that  event.target.selectedItem.toString() is working for both of them , but event.itemRenderer.data.toString() is working with List only . 

I am no real expert on this, but I think you may be a little confused, as I was when I first started learning Flex: the list is a control, the itemRenderer is normally a container – two different animals.
The itemRenderer is a property of the list and all of that renderer's data is available in a variable called 'data' – it does not have a selectedIndex or any of many properties that controls have.
HTH. Regards,
Carlos

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