怎樣在VB中用DataReport做層次式的報表???
例如下面的數據格式;     887-RL-027
       直接上層
                159-269-01-XX10
                159-261-01-XX10
                159-260-01-XX10
       最上層
                72010-10
                720-10
                159-379-01-XX10
                159-269-01-XX10
887-RLS006C01
       直接上層
                159-326-01-XX10
                159-322-01-XX10
       最上層
                720-10
                717PS6-10
                717PS12-10
                :
                :
                :