How to bind itemrender checkbox in a datagrid with the selecteditem property?

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  Hello.

  I have a spark datagrid. In a column, there is a checkbox. In another column (I need to add dynamically with actionscript), I have another check box (inside an itemrenderer). Cliccking on the first box, I need to toggle the second box.

  More generally, I have need to interact not only with a checkbox, but some other components inside the dynamically added columns.

  My question is: How do I get (with actionscript) components within a dynamically created itemrender?

  Follow the details related to the case of the box:

  Here my datagrid column definitions spark:

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                      <s:ArrayList>
                                <s:GridColumn headerText="Azioni" resizable="false" sortable="false" width="49" ....../>
                                <s:GridColumn headerText="Iscritto" width="60" itemRenderer="renderers.EventoPersonaCheckBoxRenderer" dataField="iscritto"/>
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                                <s:GridColumn id="personaEventoGridSocietaColumn" headerText="Societa" labelFunction..../>
                      </s:ArrayList>
            </s:columns>
  

  As you can see if there's an itemrender. A checkbox is inside.

  I must also add dynamically new columns in my datagrid. Each new column has an itemrender with a checkbox.

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                                          var  cols:ArrayList = new ArrayList(); 
    
                                          cols =eventoPersonaGrid.columns as ArrayList;
                                          cols.addItem(newColumn);
                                }
  

  The itemrenderer is the following:

  <s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" 
                                                    xmlns:s="library://ns.adobe.com/flex/spark" 
                                                    xmlns:mx="library://ns.adobe.com/flex/mx" clipAndEnableScrolling="true">
    
            <fx:Script>
                      <![CDATA[
                                import events.CheckBoxEvent;
    
                                protected function eventoSubscribedCB_clickHandler(event:MouseEvent):void
                                {
                                          data.iscritto = ! data.iscritto;
                                          dispatchEvent(new CheckBoxEvent(CheckBoxEvent.UPDATE,data.iscritto));
                                }
    
                      ]]>
            </fx:Script>
    
            <s:layout>
                      <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>
            </s:layout>
    
            <s:CheckBox id="eventoSubscribedCB" selected="{data.iscritto}" click="eventoSubscribedCB_clickHandler(event)"/>
    
  </s:GridItemRenderer>
  

  As explained above cliccking on the checkbox in datagrid definition, I need to change the properties of the check box that is located inside an itemrenderer.

  How can I do?

  Is there a way to get the itemrenderer and checkbox datagrid selectedItem property references?

  Thank you

  Pbesi

  In general, it is better to access the information contained in the data element or a shared object to determine the visuals for each rendering engine.  If you use the example Checkbox DataGrid spark of my blog, secondary renderers would be turn on or off depending on whether the data element is in the selectedItems.

  --

  Alex Harui

  Flex SDK Team

  Adobe System, Inc..

  http://blogs.Adobe.com/aharui

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