The new feature for putting check boxes in the header of a column would be great, but I cannot get it to work.  I am handling the AfterHeaderCheckStateChanged event and I find that the Rows collection is always null.  I also find that the cell values have not yet been updated by the time I get the event, making it difficult to figure out what state things are in.  Am I doing something wrong, or is this just broken?  The grid is bound to an ultra data source. Also, I do not get before cell update or after cell update events when I check the header checkbox.