We are using the AdvancedDataGrid as a tree dataGrid, using
GroupingCollection as the dataProvider. The items in the dataGrid
can be dragged, so dataGrid.dragEnabled is set to "true".
But by setting dragEnabled to true, all rows seems to be
draggeable, even the "group" rows! We would like to disable the
possibility to drag the group rows, without managing the entire
drag/drop process ourself using the DragManager. Is it possible?