advance datagrid

[prashant]

hi I have  a problem to get dataProvider of advance datagrid ,
please I don't want to use dpFlat:ArrayCollection directly I have to get it from advance dataGrid , please help me .

  private function getDataprovider():void
            {
               var grp:GroupingCollection= myADG.dataProvider
               //this is not working null
               
               var hir:HierarchicalData= myADG.dataProvider ;
               //this is also not working
               
               var arr:ArrayCollection=myADG.dataProvider
               //this is also not working
            }
                 

                 
            [Bindable]
            private var dpFlat:ArrayCollection = new ArrayCollection([
              {Region:"Southwest", Territory:"Arizona",
                  Territory_Rep:"Barbara Jennings", Actual:38865, Estimate:40000},
              {Region:"Southwest", Territory:"Arizona",
                  Territory_Rep:"Dana Binn", Actual:29885, Estimate:30000}, 
              {Region:"Southwest", Territory:"Central California",
                  Territory_Rep:"Joe Smith", Actual:29134, Estimate:30000}, 
              {Region:"Southwest", Territory:"Nevada",
                  Territory_Rep:"Bethany Pittman", Actual:52888, Estimate:45000}, 
              {Region:"Southwest", Territory:"Northern California",
                  Territory_Rep:"Lauren Ipsum", Actual:38805, Estimate:40000},
              {Region:"Southwest", Territory:"Northern California",
                  Territory_Rep:"T.R. Smith", Actual:55498, Estimate:40000}, 
              {Region:"Southwest", Territory:"Southern California",
                  Territory_Rep:"Alice Treu", Actual:44985, Estimate:45000},
              {Region:"Southwest", Territory:"Southern California",
                  Territory_Rep:"Jane Grove", Actual:44913, Estimate:45000}
            ]);
        ]]>
    </mx:Script>

           <mx:AdvancedDataGrid id="myADG"
            width="100%" height="100%"
            initialize="gc.refresh();">       
            <mx:dataProvider>
                <mx:GroupingCollection id="gc" source="{dpFlat}">
                    <mx:grouping>
                        <mx:Grouping>
                            <mx:GroupingField name="Region"/>
                            <mx:GroupingField name="Territory"/>
                        </mx:Grouping>
                    </mx:grouping>
                </mx:GroupingCollection>
            </mx:dataProvider>       
           
            <mx:columns>
                <mx:AdvancedDataGridColumn dataField="Region"/>
                <mx:AdvancedDataGridColumn dataField="Territory"/>
                <mx:AdvancedDataGridColumn dataField="Territory_Rep"
                    headerText="Territory Rep"/>
                <mx:AdvancedDataGridColumn dataField="Actual"/>
                <mx:AdvancedDataGridColumn dataField="Estimate"/>
            </mx:columns>
       </mx:AdvancedDataGrid>
   

[prashant]

I got the solution 

 var groupingCollectionXYZ:GroupingCollection=new GroupingCollection()
                groupingCollectionXYZ.source=advancedDataGrid.dataProvider;
                var arr:ArrayCollection = groupingCollectionXYZ.source.source.source as ArrayCollection;