Using binding to capture the selection of a List-based component

           
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Script>
        
        import mx.collections.ArrayCollection;
        import mx.events.ListEvent;
        import mx.controls.Alert;
        public var myAC:ArrayCollection = new ArrayCollection([
            {name:"A", email:"a@d.com"},
            {name:"B", email:"b@d.com"}]);

        public function handleClick(evt:ListEvent):void
        {
            Alert.show(evt.rowIndex + " / col:" + evt.columnIndex + "." + "for " + evt.currentTarget.selectedItem.name);
        }
      
    </mx:Script>
    <mx:DataGrid id="dg" width="500" height="150"
        dataProvider="{myAC}">
        <mx:columns>
            <mx:DataGridColumn dataField="name"  headerText="Contact Name" width="300" />
            <mx:DataGridColumn dataField="email" headerText="E-Mail"       width="200" />
        </mx:columns>
    </mx:DataGrid>
    <mx:Label text="selected: {dg.selectedItem.name} ({dg.selectedItem.email})" fontSize="16" />

</mx:Application>

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Using binding to capture the selection of a List-based component : List Selection « Components « Flex

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