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	<title>中文Flex例子 &#187; collectionChange</title>
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	<description>中文Adobe Flex例子,Flex实例教程,RIA资源,全文检索技术,算法和数据结构</description>
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		<title>Flex中如何通过ArrayCollection对象的collectionChange事件，verticalScrollPosition以及maxVerticalScrollPosition属性创建一个自动滚动的DataGrid的例子</title>
		<link>http://blog.minidx.com/2009/07/01/2673.html</link>
		<comments>http://blog.minidx.com/2009/07/01/2673.html#comments</comments>
		<pubDate>Wed, 01 Jul 2009 00:21:14 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[DataGrid]]></category>
		<category><![CDATA[ArrayCollection]]></category>
		<category><![CDATA[collectionChange]]></category>
		<category><![CDATA[CollectionEvent]]></category>
		<category><![CDATA[maxVerticalScrollPosition]]></category>
		<category><![CDATA[validateNow()]]></category>
		<category><![CDATA[verticalScrollPosition]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/?p=2673</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何通过ArrayCollection对象的collectionChange事件，verticalScrollPosition以及maxVerticalScrollPosition属性创建一个自动滚动的DataGrid。
让我们先来看一下Demo（可以点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;name=&#34;DataGrid_maxVerticalScrollPosition_text&#34;
&#160; &#160; &#160; &#160; xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;
&#160; &#160; &#160; &#160; creationComplete=&#34;init();&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.CollectionEvent;
&#160; &#160; &#160; &#160; &#160; &#160; private var timer:Timer;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function init():void {
&#160; &#160; [...]]]></description>
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		<item>
		<title>Flex中如何通过监听collectionChange事件检测DataGrid的数据源是否改变的例子</title>
		<link>http://blog.minidx.com/2009/06/06/2575.html</link>
		<comments>http://blog.minidx.com/2009/06/06/2575.html#comments</comments>
		<pubDate>Sat, 06 Jun 2009 10:29:38 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[DataGrid]]></category>
		<category><![CDATA[collectionChange]]></category>
		<category><![CDATA[dataProvider]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/?p=2575</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何通过监听collectionChange事件，检测DataGrid的数据源是否改变。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;name=&#34;DataGrid_collectionChange_test&#34;
&#160; &#160; &#160; &#160; xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;
&#160; &#160; &#160; &#160; initialize=&#34;init();&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.controls.Alert;
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.CollectionEvent;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function init():void {
&#160; &#160; [...]]]></description>
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		</item>
		<item>
		<title>Flex中如何自定义CheckBox作为List数据提供源的例子</title>
		<link>http://blog.minidx.com/2009/03/09/2266.html</link>
		<comments>http://blog.minidx.com/2009/03/09/2266.html#comments</comments>
		<pubDate>Mon, 09 Mar 2009 00:34:28 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[List]]></category>
		<category><![CDATA[ArrayCollection]]></category>
		<category><![CDATA[CheckBox]]></category>
		<category><![CDATA[collectionChange]]></category>
		<category><![CDATA[Component]]></category>
		<category><![CDATA[filter]]></category>
		<category><![CDATA[itemRenderer]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/?p=2266</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何自定义CheckBox作为List数据提供源。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; xmlns:vo=&#34;*&#34;
&#160; &#160; &#160; &#160; layout=&#34;horizontal&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;
&#160; &#160; &#160; &#160; creationComplete=&#34;init();&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.CollectionEvent;
&#160; &#160; &#160; &#160; &#160; &#160; import mx.utils.ObjectUtil;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function init():void {
&#160; &#160; [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Flex中如何通过监听collectionChange事件检测arraycollection是否改变了的例子</title>
		<link>http://blog.minidx.com/2008/05/15/850.html</link>
		<comments>http://blog.minidx.com/2008/05/15/850.html#comments</comments>
		<pubDate>Thu, 15 May 2008 12:59:12 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Flex]]></category>
		<category><![CDATA[ArrayCollection]]></category>
		<category><![CDATA[collectionChange]]></category>
		<category><![CDATA[PopUpButton]]></category>
		<category><![CDATA[refresh]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/2008/05/15/850.html</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何通过监听collectionChange事件检测ArrayCollection是否改变.这里所谓的改变，包括项目的追加，删除，以及刷新等操作。 
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里查看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.utils.ObjectUtil;
&#160; &#160; &#160; &#160; &#160; &#160; import mx.controls.dataGridClasses.DataGridColumn;
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.CollectionEvent;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function arrColl_collectionChange(evt:CollectionEvent):void {
&#160; &#160; [...]]]></description>
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