Column Infinity, classification, if it is three levels, if you delete the first level, the third level cannot be deleted.
Column Infinitus, classification, if it is three levels, if you delete the first level, the third level cannot be deleted
Column Infinitus, classification, if it is three levels, if you delete the first level, the third level cannot be deleted
Summer2018-07-10 14:42:23
The third time is to determine whether he has subordinates before deletion is allowed. Or, delete subordinates at the same time when deleting.