I''ve found that GridGrouping Control is very usefull for me, thank you.
But it doesn''t work properly when I use it in design mode :(. For example, the control locks out IDE, when I bind dataset as datasource (typed dataset, parent table and several related tables).
But the question is:
How can I show (null)s in cells for null values, as it was implemented in standart DataGrid control?
Some design time problems have been fixed. If you use the Syncfusion Update Notifier, you will be automatically notified when a patch is published.
To place "(null)" in empty cells, you can use the QueryCellStyleInfo event.