Thanks Akshar and Vimal.

I will investigate based on your suggestions and will post my
findings.

--Mohneesh

On Mar 13, 2:59 am, VN <[email protected]> wrote:
> Hi,
>
> I think you are seeing a bug in groupingcollection class. If you have
> null vaues in grouping column you'll get this error. You have to use a
> custom groupingFunction.
>
> try this
>
>   private function
> groupByGroupingFunction(data:Object,field:GroupingField):String
>         {
>             var dataValue:String = data[field.name];
>             if(!dataValue)
>             {
>                 dataValue = "N/A";
>             }
>
> you have to use this function like this
> groupingField.groupingFunction = groupByGroupingFunction;
> I do this in actionscript. you can figure out how to set this in MXML.
>
> V
> groupingField.groupingFunction =
> On Mar 11, 10:45 am, mohneesh <[email protected]> wrote:
>
>
>
> > Hi Everyone,
>
> > I am exploring AdvancedDataGrid's Grouping Collection and has been
> > experiencing a problem which is very inconsistent. This problem occurs
> > when I change the data provider of the advanced data grid. Script
> > error that I get
>
> > TypeError: Error #1010: A term is undefined and has no properties.
> >             at mx.controls.listClasses::AdvancedListBase/
> > makeRowsAndColumnsWithExtraRows()
> >             at mx.controls.listClasses::AdvancedListBase/
> > updateDisplayList()
> >             at mx.controls::AdvancedDataGridBaseEx/updateDisplayList()
> >             at mx.controls::AdvancedDataGrid/updateDisplayList()
> >             at mx.controls.listClasses::AdvancedListBase/
> > validateDisplayList()
> >             at mx.managers::LayoutManager/validateDisplayList()
> >             at mx.managers::LayoutManager/doPhasedInstantiation()
> >             at Function/http://adobe.com/AS3/2006/builtin::apply()
> >             at mx.core::UIComponent/callLaterDispatcher2()
> >             at mx.core::UIComponent/callLaterDispatcher()
>
> > I tried looking into the code of AdvancedListBase and found error is
> > happening because of a attribute verticalScrollPosition which has a
> > value -1.
>
> > Anyone has any idea on why this error will happen? Any help will be
> > much appreciated.

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