已知節點尋找根節點的asp函數複製程式碼如下:
Function getTreeRootId(pNodeId)
getSQL = select note_id,parent_id from [T_tree_demo] where note_id='& pNodeId &'
Set getRs = db.Execute(getSQL)
If Not getRs.eof Then
If Trim(getRs(parent_id)) = 0 Then
getTreeRootId = Trim(getRs(note_id))
Exit Function
Else
getTreeRootId = getTreeRootId(Trim(getRs(parent_id)))
End If
Else
getTreeRootId = 0
Exit Function
End If
getRs.close
Set getRs = Nothing
End Function