Hello!

We are using xamGrid 11.1.

Please help with the following problem:

There XamGrid table with a number of speakers (no matter their number.) Group by doing one of these columns. Then apply the conditional formatting:

 MaximumValueConditionalFormatRule rule = new MaximumValueConditionalFormatRule
                        {
                            StyleToApply = (Style)Application.Current.Resources["Max_Style"],
                            IsTerminalRule = true,
                            RuleExecution = Infragistics.EvaluationStage.AfterFilteringAndPaging
                        };
                        _curCol.ConditionalFormatCollection.Add(rule);

where _curCol - Infragistics.Controls.Grids.Column.

This rule is well applied in all groups. Then when you try to move this column with conditional formatting occurs System.NullReferenceException. I understand this column disappears from the collection class AllColumns ColumnBaseCollection.