Flex dataprovider的几种格式写法

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
	<mx:Panel title="My Application"
			  paddingTop="10"
			  paddingBottom="10"
			  paddingLeft="10"
			  paddingRight="10"
			  width="800">
		<mx:HBox width="100%">
			<mx:List width="200">
				<mx:dataProvider>
					<mx:Array>
						<mx:String>Item 1</mx:String>
						<mx:String>Item 2</mx:String>
						<mx:String>Item 3</mx:String>
					</mx:Array>
				</mx:dataProvider>
			</mx:List>

			<mx:List labelField="label"
					 width="200">
				<mx:dataProvider>
					<mx:Array>
						<mx:Object label="one"
								   data="1"/>
						<mx:Object label="two"
								   data="2"/>
					</mx:Array>
				</mx:dataProvider>
			</mx:List>

			<mx:List width="200">
				<mx:dataProvider>
					<mx:ArrayCollection>
						<mx:Array>
							<mx:String>湖北</mx:String>
							<mx:String>湖南</mx:String>
						</mx:Array>
					</mx:ArrayCollection>
				</mx:dataProvider>
			</mx:List>

			<mx:List width="200"
					 labelField="label">
				<mx:dataProvider>
					<mx:ArrayCollection>
						<mx:Array>
							<mx:Object label="湖北"
									   data="1"/>
							<mx:Object label="湖南"
									   data="2"/>
						</mx:Array>
					</mx:ArrayCollection>
				</mx:dataProvider>
			</mx:List>

			<mx:List width="200"
					 labelField="@label">
				<mx:dataProvider>
					<mx:XMLList>
						<item label="湖北"
							  data="1"/>
						<item label="湖南"
							  data="2"/>
					</mx:XMLList>
				</mx:dataProvider>
			</mx:List>

			<mx:List width="200"
					 labelField="@label">
				<mx:dataProvider>
					<mx:XMLListCollection>
						<mx:XMLList>
							<item label="湖北"
								  data="1"/>
							<item label="湖南"
								  data="2"/>
						</mx:XMLList>
					</mx:XMLListCollection>
				</mx:dataProvider>
			</mx:List>

			<mx:List width="200"
					 labelField="@label"
					 dataProvider="{myXML.item}">
			</mx:List>

<s:DropDownList id="cbo1" prompt="我的下来" selectedIndex="-1">
		<s:dataProvider>
			<mx:ArrayList>
				<fx:String>北京2</fx:String>
				<fx:String>美国2</fx:String>
				<fx:String>中国2</fx:String>
				<fx:String>德州2</fx:String>
				<fx:String>英国2</fx:String>
			</mx:ArrayList>
		</s:dataProvider>
	</s:DropDownList>
		</mx:HBox>
	</mx:Panel>
	<mx:Script>
		<![CDATA[
			[Bindable]
			private var myXML:XML=<items>   
					<item label="湖北" data="1"/>   
					<item label="湖南" data="2"/>   
				</items>
		]]>
	</mx:Script>
</mx:Application>