Hi,

I recently upgraded my XamPivotGrid to version 11.2 and I am now running into some errors while trying to set expansion on the grid:

I have a method called DrillIn defined as follows:

  private void DrillIn(IFilterViewModel filterViewModel, IFilterMember filterMember)
        {
            manualResetEvent = new ManualResetEvent(false);

            //Condition to drill in further
            if (filterMember.Member.LevelDepth < LevelDepth && !(filterMember.Member.Members.Count == 1 && filterMember.Member.Caption == filterMember.Member.Members[0].Caption))
            {
                this.Dispatcher.Invoke(new Action(
                        delegate()
                        {
                            filterMember.IsExpanded = true;
                        }));

                if (filterMember.FilterMembers == null)
                    manualResetEvent.WaitOne();

                foreach (IFilterMember member in filterMember.FilterMembers)
                {
                    DrillIn(filterViewModel, member);
                }
            }
            else
            {
                this.Dispatcher.Invoke(
                    System.Windows.Threading.DispatcherPriority.Normal,
                    new Action(
                        delegate()
                        {
                            filterMember.IsExpanded = false;
                        }));

            }
        }

I now get the following exception:

CAUGHT: Object reference not set to an instance of an object./n   at Infragistics.Olap.FlatData.FlatDataSource.CreateFilterSource(IMember member, IFilterSource parentFilterSource)
   at Infragistics.Olap.DataSourceBase.RegisterFilterSource(IMember member, Int32 levelDepth, IFilterSource parentFilterSource)
   at Infragistics.Olap.DataSourceBase.RegisterFilterSourceHierarchy(IMember member)
   at Infragistics.Olap.DataSourceBase.RegisterFilterSource(IMember member)
   at Infragistics.Olap.FilterViewModelBase.GetMemberFilterSource(IMember member)
   at Infragistics.Olap.FlatData.FlatDataFilterViewModel.GenerateFilterMembers(IEnumerable`1 members, IFilterMember parent)
   at Infragistics.Olap.FilterViewModelBase.FillFromFilterMemberMembers(IFilterMember filterMemberToFill, Boolean drillDown)
   at Infragistics.Olap.FilterViewModelBase.FilterMemberPropertyChanged(Object sender, PropertyChangedEventArgs e)
   at Infragistics.Olap.Data.Base.FilterMember.OnPropertyChanged(String propertyName)
   at Infragistics.Olap.Data.Base.FilterMember.set_IsExpanded(Boolean value)
   at TRIM.View.PivotTab.<>c__DisplayClass1b.<DrillIn>b__17() in C:\workspace\depot\spg\TRIM\View\PivotTab.xaml.cs:line 608

The same code worked without any issues with 11.1. Please advice what has changed and how I might be able to fix it.

Thanks,

Divya