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Flex AdvancedDatagrid Selected row count

I have an AdvancedDatagrid with allowMultipleSelection set to true. The users can select multiple record from the grid by pressing CTRL key and click. I want to show selected number of records count in a text field at the bollom of the grid (out side grid component). How this can be done?

1 Solution
Use this property:

Replace <<advancedDataGridID>> with the ID of the AdvancedDataGrid.

So it will look like this:
<mx:Text text="{<<advancedDataGridID>>.selectedItems.length}"/>

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