Programmatically add GidViewColumnGroup

[Dan]

I'm creating all columns dynamically in code.  I"m creating groups but the groups are not being rendered. This logic seems to make sense, am I missing something?

_dataGrid.Columns.Clear();
            _dataGrid.ColumnGroups.Clear();
            foreach (var period in currentPeriods)
            {

                var periodGroupName = "test" + col;
                var periodGroup = new GridViewColumnGroup {Header = period.Name, Name = periodGroupName};

                var runGroupName = "test2" + col;
                var runGroup = new GridViewColumnGroup { Header = "Run", Name = runGroupName };

                periodGroup.ChildGroups.Add(runGroup);

                _dataGrid.ColumnGroups.Add(periodGroup);

                var origColumn = new GridViewDataColumn
                    {
                        ColumnGroupName = periodGroupName,
                        Header = "Orig",
                        DataMemberBinding = new Binding("OriginalValue")
                    };

                _dataGrid.Columns.Add(origColumn);

                var repeatColumn = new GridViewDataColumn
                {
                    ColumnGroupName = periodGroupName,
                    Header = "Repeat",
                    DataMemberBinding = new Binding("RepeatValue")
                };

                _dataGrid.Columns.Add(repeatColumn)

                col += 2;
            }

[Yoan]

Hi Dan,

You can check this forum thread which you may find useful.

Regards,
Yoan
the Telerik team

[Dan]

No, that isn't helpful.  I'm adding columns basically the same way as identified in that post.  The columns are appearing but no column groups are being displayed.

[Yoan]

Hello Dan,

 I already answered your support ticket on the subject. For convenience I will paste my answer here as well:

Actually, using the Loaded event is not good idea in this scenario. I have modified you project and now it is working as expected. Please find it attached. Note that I have replaced the GridViewDataColumn'sColumnGroupName with the child ColumnGroup than with the parent ColumnGroup.

Regards,
Yoan
the Telerik team