private void InitializeRowDragAndDrop(GridViewRow row) { if (row == null) return; row.SetValue(RadDragAndDropManager.AllowDragProperty, true); row.SetValue(RadDragAndDropManager.AllowDropProperty, true); RadDragAndDropManager.RemoveDropQueryHandler(row, OnGridViewRowDropQuery); RadDragAndDropManager.AddDropQueryHandler(row, OnGridViewRowDropQuery); }