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<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" >

    <mx:Script>

        <![CDATA[

            [Bindable]public var selectedItem:Object;      

        ]]>

    </mx:Script>

  <mx:Panel title="下拉列表控件示例"

    height="75%" width="75%"

    paddingTop="10" paddingLeft="10">

    <mx:ComboBox close="selectedItem=ComboBox(event.target).selectedItem" editable="true">

       <mx:dataProvider>

           <mx:ArrayCollection>

           <mx:source>

              <mx:Object label="青海" data="西宁"/>

              <mx:Object label="甘肃" data="兰州"/>

              <mx:Object label="宁夏" data="银川"/>

              <mx:Object label="陕西" data="西安"/>

              <mx:Object label="新疆" data="乌鲁木齐"/>

              <mx:Object label="西藏" data="拉萨"/>

           </mx:source>

           </mx:ArrayCollection>

       </mx:dataProvider>

    </mx:ComboBox>

    <mx:Spacer/>

    <mx:Label text="您选择了: {selectedItem.label}，省会： {selectedItem.data}"/>

  </mx:Panel>

</mx:Application>