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    <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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    1. USLee Chee Kiam
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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