Problem with checkbox item renderer in datagrid

Question

I have a data grid having check box as an item renderer. I have viewed many posts in this forum but nothing useful in my case. I am failed to bind my datagrid itemrenderer checkbox with the field of dataprovider i.e. listUnitMovement.CHECK_PATH. Then I have to traverse data provider to check which checkboxes are checked.
[Bindable]
var listUnitMovement:XMLList=null;                      
In a function call
public function init(event:ResultEvent):void
    listUnitMovement=event.result.unitmovement;
     <mx:DataGrid id="dg_country"
                           dataProvider="{listUnitMovement}"
                              enabled="true">
                            <mx:columns>
                               <mx:DataGridColumn>
                                    <mx:itemRenderer>
                                        <mx:Component>
                                            <mx:CheckBox selectedField="CHECK_PATH"  />
                                        </mx:Component>                                       
                                    </mx:itemRenderer>
                                </mx:DataGridColumn>
                                <mx:DataGridColumn headerText="Latitude" dataField="NEW_LAT" visible="false"/>
                                <mx:DataGridColumn headerText="Longitude" dataField="NEW_LONG" visible="false"/>
                               <mx:DataGridColumn>
                                    <mx:itemRenderer>
                                        <mx:Component>
                                            <mx:Button label="Details"/>
                                        </mx:Component>                                       
                                    </mx:itemRenderer>
                                </mx:DataGridColumn>
                            </mx:columns>
                        </mx:DataGrid>

Answer 1

Hi,
Do you want to just check/uncheck the checkboxes based on the CHECK_PATH field.
Do you want something like this...
<?xml version="1.0" encoding="utf-8"?><mx:Application  xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
 <mx:Script>
<![CDATA[
 import mx.collections.ArrayCollection;[
Bindable] 
private var listUnitMovement:ArrayCollection = new ArrayCollection([{CHECK_PATH:true,NEW_LAT:109.233,NEW_LONG:232.22},{CHECK_PATH:true,NEW_LAT:109.233,NEW_LONG:232.22},{CHECK_PATH:false,NEW_LAT:133.233,NEW_LONG:702.22}]);]]>
</mx:Script>
 <mx:DataGrid dataProvider="{listUnitMovement}">
 <mx:columns>
 <mx:DataGridColumn>
 <mx:itemRenderer>
 <mx:Component>
 <mx:CheckBox selectedField="CHECK_PATH" change="data.CHECK_PATH=selected" />
 </mx:Component>  
</mx:itemRenderer>
 </mx:DataGridColumn>
 <mx:DataGridColumn dataField="NEW_LAT"/>
 <mx:DataGridColumn dataField="NEW_LONG"/>
 </mx:columns>
 </mx:DataGrid>
</mx:Application>
Please let me know clearly what's your problem...Do you want to just bind the check box based on XmlList or something else..?
Thanks,
Bhasker Chari.S