NullReferenceException with RecordFilters - ggc.Refresh without repaint

[Administrator]

I am working with a gridGroupingControl where I add and remove some recordFilters to different nested tables.

Thereby sometimes I earn an unpredictable NullReferenceException (see stacktrace below) when I try to add a recordFilter to a tableDescriptor where I previous cleared all existing recordFilters.

To solve the problem I have to call a ggc.Refresh between clearing all recordFilters and add the new filters. In that case the exception does not appear.

My problem is now that I have the layout of ggc suspended when I remove and add the filters to avoid flicker of the layout. But calling ggc.Refresh does not take care about the suspended layout and does an repaint that leads to flicker ;-(

My question: Is there a method similar to ggc.Refresh without repaint? Or is there a chance to avoid the exception without refresh?

Some help would be nice.

Regards, Klaus

System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.
at Syncfusion.Grouping.RecordFilterDescriptor.GetCompiledExpression()
at Syncfusion.Grouping.RecordFilterDescriptor.set_Expression(String value)
at Syncfusion.Grouping.RecordFilterDescriptor.InitializeFrom(RecordFilterDescriptor other)
at Syncfusion.Grouping.RecordFilterDescriptorCollection.InitializeFrom(RecordFilterDescriptorCollection other)
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableDescriptor.InitializeFrom(TableDescriptor tableDescriptor)
at Syncfusion.Grouping.RelationDescriptor.InitializeFrom(RelationDescriptor other)
at Syncfusion.Grouping.RelationDescriptorCollection.InitializeFrom(RelationDescriptorCollection other)
at Syncfusion.Grouping.Table.SynchronizeRelatedTables()
at Syncfusion.Grouping.TableCollection.SynchronizeWithRelationDescriptor()
at Syncfusion.Grouping.TableCollection.get_Count()
at Syncfusion.Grouping.Record.AdjustRecordRowCount()
at Syncfusion.Grouping.Record.GetVisibleCount()
at Syncfusion.Grouping.Record.GetCounter()
at Syncfusion.Collections.BinaryTree.TreeTableWithCounterEntry.GetCounterTotal()
at Syncfusion.Collections.BinaryTree.TreeTableWithCounter.GetCounterTotal()
at Syncfusion.Grouping.Internals.ElementTreeTable.get_VisibleCount()
at Syncfusion.Grouping.DetailsSection.GetVisibleCount()
at Syncfusion.Windows.Forms.Grid.Grouping.GridGroupExtend.OnInitializeVisibleCounters(Group owner, GridGroupOptionsStyleInfo go)
at Syncfusion.Windows.Forms.Grid.Grouping.GridChildTable.OnInitializeVisibleCounters()
at Syncfusion.Grouping.Group.InitVisibleCounters()
at Syncfusion.Grouping.Group.GetVisibleCount()
at Syncfusion.Grouping.NestedTable.GetVisibleCount()
at Syncfusion.Grouping.Table.OnEnsureInitialized(Object sender)
at Syncfusion.Grouping.Element.EnsureInitialized(Object sender, Boolean notifyParent)
at Syncfusion.Grouping.Table.EnsureInitialized(Object sender, Boolean notifyParent)
at Syncfusion.Grouping.Element.EnsureInitialized(Object sender)
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableModel.UpdateColumnWidths(Boolean force)
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableModel.UpdateColumnWidths()
at Syncfusion.Windows.Forms.Grid.Grouping.GridTable.VisibleColumns_TotalWidthRequest(Object sender, CancelEventArgs e)
at Syncfusion.Windows.Forms.Grid.Grouping.GridVisibleColumnDescriptorCollection.OnTotalWidthRequest(CancelEventArgs e)
at Syncfusion.Windows.Forms.Grid.Grouping.GridVisibleColumnDescriptorCollection.get_TotalWidth()
at Syncfusion.Windows.Forms.Grid.Grouping.GridTable.GetHorizontalScrollWidth(Boolean isNested)
at Syncfusion.Windows.Forms.Grid.Grouping.GridTable.GetHorizontalScrollWidth()
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.GetHorizontalScrollWidth()
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.SynchronizeGridWithEngine()
Eine nicht behandelte Ausnahme des Typs ''System.NullReferenceException'' ist in syncfusion.grouping.base.dll aufgetreten.

Zusätzliche Informationen: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.

catched at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.SynchronizeGridWithEngine() in :line 0

[stanleyj]

Hi Klaus,

Can you help us see this issue in any of our samples that are shipped?

If you wish to Reset filters then try.
this.groupingGrid1.Engine.TableDescriptor.ResetRecordFilters();

Please refer the sample in \Syncfusion\Essential Studio\4.1.0.50\windows\Grid.Grouping.Windows\Samples\GroupCustomers

Best regards,
Stanley