Inline ItemRenderer

Inline itemRenderer tip

Using listItems property to referencing Item Renderers

DataGrid (or any other ListBase) listItems property returns a 2D array which contains a reference to the item renderer for each cell in the DataGrid.

Referencing Item Renderers from Outside

Datagrid runtime item renderers

Datagrid runtime item renderers

HeaderRenderer example

Adding a combobox to a datagrid header as
headerRenderer

ItemRenders

Series of articles about ItemRenders:

1. 
   ItemRendering pt.1

Item Renderers

Thinking About Item Renderers - Article about DataGrids ItemRenderers
Different item renderers in list-based control.
Flex cookbook article: Different Items renderers in List
Creating truly reusable renderers with ClassFactory
Item Renderers in DataGrids - A Primer for Predictable Behavior
And one more example here
Coloring the Background of Cells
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Creating View States purely in AS3