tourdeflexmodules/src/spark/controls/ComboBoxExample.mxml

<?xml version="1.0" encoding="utf-8"?>
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      http://www.apache.org/licenses/LICENSE-2.0

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<s:Module xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx">
	
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			
		[Bindable]
		public var cards:ArrayCollection = new ArrayCollection(
			[ {label:"Visa", data:1}, 
			{label:"MasterCard", data:2}, 
			{label:"American Express", data:3} ]);
		
		private function changeHandler(event:Event):void {
		
			myLabel.text = "You selected: " +  ComboBox(event.target).selectedItem.label;
			myData.text = "Data: " +  ComboBox(event.target).selectedItem.data;
		}     
		]]>
	</fx:Script>
	
	<s:Panel title="ComboBox Sample" width="100%" height="100%">
		
		<s:layout>
			<s:HorizontalLayout paddingLeft="10" paddingRight="10" paddingTop="10" paddingBottom="10"/>
		</s:layout>
		
		<s:VGroup>
			<s:Label  width="200" color="0x336699" text="Select credit card type:"/>
			<s:ComboBox dataProvider="{cards}" width="150" color="0x000000"
						change="changeHandler(event)" selectedIndex="0"/>
			<s:Label id="myLabel" text="You selected:" fontWeight="bold"/>
			<s:Label id="myData" text="Data:" fontWeight="bold"/>	
		</s:VGroup>

		<s:Label width="75%" bottom="20" horizontalCenter="0"
				 text="The ComboBox component is similar to a DropDownList but includes a TextInput instead of a Label. A user can type into the TextInput and the drop-down will scroll to and highlight the closest match.
Users are allowed to type in an item not found in the dataProvider. With this behavior, a ComboBox acts as a list of suggested values, while a DropDownList acts as a list of possible values.  "/>
			
	</s:Panel>    
</s:Module>