Hi Dimitri,
Thank you for being patience.
The following is a technique to have combobox in the GridGroupingControl. Please try it and let us know if you need any further assistance.
By Code:
>>>>>>>
StringCollection collection = new StringCollection();
collection.AddRange(new string[] {"One","Two","Three","Four"});
GridTableDescriptor tableDesc = this.gridGroupingControl1.TableDescriptor;
tableDesc.Columns[“Col1”].Appearance.AnyRecordFieldCell.CellType = "ComboBox";
tableDesc.Columns[“Col1”].Appearance.AnyRecordFieldCell.DataSource = collection;
>>>>>>>
By Design time:
>>>>>>
Please refer to the following video clip to set the dropdown in the designer mode.
VideoClip_ComboBox_GGC.zip>>>>>>
Have a nice day.
Best regards,
Madhan