How to get selected values (using checkBox) from DataGrid in flex.

Question

i have a datagrid which is getting values from a XML file (getting this xml file from database using PHP and HTTP request in flex). i have created a checkbox in every row in data grid. and here is my requirement: i want to select tow or three check-box and would like to get all the values form that particular ROWs in some form , prefered arraycollection (such that i can pass this array directly to a bar chart) .. can some one help me as i am new to flex .
code ......
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" creationComplete="siteData.send()">
          <mx:Script>
                    <![CDATA[
                              import mx.collections.XMLListCollection;
                              import mx.controls.*;
                              import mx.events.ListEvent;
                              import mx.rpc.events.ResultEvent;
                              import mx.controls.Alert;
                              [Bindable] private var fullXML:XMLList;
                              private function contentHandler(evt:ResultEvent):void{
                                        fullXML = evt.result.values;
                    ]]>
          </mx:Script>
          <mx:VBox>
                    <mx:Label text="This Data Grid is loading the full XML file"/>
                    <mx:DataGrid width="600"  id="datagrid" dataProvider="{fullXML}">
                              <mx:columns>
                                        <mx:DataGridColumn headerText="Select">
                                                  <mx:itemRenderer>
                                                            <mx:Component>
                                                                      <mx:HBox horizontalAlign="center">
                                                                                <mx:CheckBox id="check"/>
                                                                      </mx:HBox>
                                                            </mx:Component>
                                                  </mx:itemRenderer>
                                        </mx:DataGridColumn>
                                        <mx:DataGridColumn dataField="release_version" headerText="Release"/>
                                        <mx:DataGridColumn dataField="build" headerText="build"/>
                                        <mx:DataGridColumn dataField="time_login" headerText="time_login"/>
                                        <mx:DataGridColumn dataField="time_tunnel" headerText="time_tunnel"/>
                                        <mx:DataGridColumn dataField="rate_login" headerText="time_tunnel"/>
                                        <mx:DataGridColumn dataField="rate_tunnel" headerText="rate_tunnel"/>
                              </mx:columns>
                    </mx:DataGrid>
          </mx:VBox>
          <mx:HTTPService url="http://localhost/php_genxml.php" id="siteData" result="contentHandler(event)" resultFormat="e4x"/>
</mx:Application>
as you can see in the image , i will get this datgrid . now i want to select two or three checkboxes and would like to get all the values form the perticular row (for which check box is selected). i would like to get in array from such that i can driectly pass them to bar chart....
can some one help me in this. as i m new to flex. or if you have some other suggestion ...My final requirement is: select some values and generate bar gharph for those values.
please help me in this.
thanks
tanuj

Answer 1

Hi Timo -
Thanks for the suggestion. I could get the values as below:
public void multiOpUnitValChange(ValueChangeEvent valueChangeEvent) {
// Add event code here...
BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding opUnitIter = (DCIteratorBinding)bindings.get("OperatingUnit2VOIterator");
Integer[] values = (Integer[])valueChangeEvent.getNewValue();
for (int i=0; i<values.length; i++){
Row row = opUnitIter.getRowAtRangeIndex(i);
System.out.println(row.getAttribute("OpUnitId"));
Thanks -
Rohit