DataGrid dropdowns getting reset on scrolling through the grid

I have a datagrid which contains two columns with dropdowns.
The dropdown values are set to particular index programmatically.
But when the scroll bar of the grid is made to scroll from top to
bottom and then back to top the selected values get reset. Any idea
about this behaviour?

Yes. item renderers are "recycled". Flex only creates enough
for the visible rows. When you scroll, the item data for the
scrolled-into position item is sent to the renderer(through the set
data() setter), which must use that data to render its visible
state.
This means all aspects of the item renderer must be data
driven. You cannot do an data oriented work in initialize or
creation complete, but must override the set data() method. Best
practice is actually a bit more complicated thatn that. You will
have toset the selectedIndex of the renderer combobox from some
value stored in the item.
Google: Alex Harui item renderer recycle
For a full explanation and examples.
Tracy

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How large is your HD and how much space do you have left?
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Nightwing75 wrote:
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DataGrid dropdowns getting reset on scrolling through the grid

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