Thank you for your answer. Unfortunately that example also uses the descriptive tooltip "Dragging Item before/after rowitem" instead of a "droppreviewline"
To clarify please see the two attached files from your demo site.
The behavior I'd like to enable or implement is the IsDropPreviewLineEnabled functionality, but on a gridview.
So to just have a thin colored line to show the position where the item will inserted after a drop instead of a tooltip describing where it will drop.
So, of these 2 screenshots, the one shown in "RadTreeView_TreeViewDragAndDrop_060" is the one I want..
But then on a radgridview instead of a treeview.
Any idea if at all possible?