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    copied!<p>Here is another <a href="http://www.len.ro/2009/08/radio-button-renderer-in-a-datagrid/" rel="nofollow">solution</a> with working example. If you are not using XML data, you will not allow to use parent(). Use outerDocument.dg.dataProvider instead, where dg is id for your DataGrid.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"&gt; &lt;mx:Script&gt; &lt;![CDATA[ public var dp:XML = &lt;users&gt; &lt;user&gt; &lt;name&gt;one&lt;/name&gt; &lt;main&gt;true&lt;/main&gt; &lt;/user&gt; &lt;user&gt; &lt;name&gt;two&lt;/name&gt; &lt;main&gt;false&lt;/main&gt; &lt;/user&gt; &lt;user&gt; &lt;name&gt;tre&lt;/name&gt; &lt;main&gt;false&lt;/main&gt; &lt;/user&gt; &lt;/users&gt;; ]]&gt; &lt;/mx:Script&gt; &lt;mx:VBox&gt; &lt;mx:DataGrid dataProvider="{dp.user}" width="400"&gt; &lt;mx:columns&gt; &lt;mx:DataGridColumn headerText="Name" dataField="name"/&gt; &lt;mx:DataGridColumn headerText="Main"&gt; &lt;mx:itemRenderer&gt; &lt;mx:Component&gt; &lt;mx:HBox horizontalAlign="center"&gt; &lt;mx:Script&gt; &lt;![CDATA[ private function changeMain(event:Event):void{ if(data.main == 'true'){ //nothing data.main = 'true'; }else{ for each(var u:XML in (data as XML).parent().user){ u.main = 'false'; } data.main = 'true'; } } ]]&gt; &lt;/mx:Script&gt; &lt;mx:RadioButton click="changeMain(event)" selected="{(data.main == 'true')}"/&gt; &lt;/mx:HBox&gt; &lt;/mx:Component&gt; &lt;/mx:itemRenderer&gt; &lt;/mx:DataGridColumn&gt; &lt;mx:DataGridColumn headerText="Main value" dataField="main"/&gt; &lt;/mx:columns&gt; &lt;/mx:DataGrid&gt; &lt;/mx:VBox&gt; &lt;/mx:Application&gt; </code></pre>
 

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