Flex 3: How do I get the DataGridColumn's dataField in its ItemRenderer?

Use the DataGridListData class, which is passed into the renderer. It contains a dataField property I'm pretty sure this should work: mx:Label text="{datalistData. DataField}.

Use the DataGridListData class, which is passed into the renderer. It contains a dataField property. I'm pretty sure this should work.

This doesn't compile: "1120: Access of undefined property listData". It's probably a flex2 solution, but I'm using Flex3 – Maurits de Boer Aug 20 '10 at 12:03 As you discovered, this has nothing to do w/ Flex 2. Many classes already implement the IDropInListItemRenderer interface. Off topic; You should consider re-working your itemRenderer to use less containers.

Why not just use a Label? Do you really need the addition 2 containers? – URL1 Aug 20 '10 at 12:22 It's actually only a part of the entire renderer, in my actual code it really does need the containers.

But you're right, the example used here can be smaller. – Maurits de Boer Aug 31 '10 at 13:21 I'm glad you got it worked out. If you think my answer helped you solve the issue, feel free to show some love and give my answer a vote.

;) – URL1 Aug 31 '10 at 13:30.

The comment by Flextras.com helped me to find the solution. I can indeed use listData. DataField, but first the IDropInListItemRenderer class needs to be implemented.

The final ItemRenderer.

Creynders answer is simpler, and works too. – Adam Nofsinger Jul 12 at 12:41.

You don't have to implement the IDropInListItemRenderer. This is enough: data ( listData as DataGridListData ). DataField The concrete listData is of type DataGridListData, but the property itself is typed to BaseListData, since a renderer can be used in various scenarios.

However, in this scenario we know it's DataGridListData, therefore we can simply cast it to access the dataField property.

I made my control more generic, and added a type check: if (listData is DataGridListData) { ... } – Adam Nofsinger Jul 12 at 12:43.

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