问题描述
在一些示例中，如将层次结构数据结构绑定到树视图控件
（http://www.codeproject.com/Articles/140827/Dynamic -Binding-Of-Hierarchy-Data-Structure-To-Tre）
有一个表tbl_Tree_Hierarchy，在这个表中有一列它的名字是 under_parent对于root它的值是0但是对于其他一些我不知道它的值是如何被定义的。
我可以理解水平深度但是欠父我很难。请帮助我们如何确定价值。
最好的问候
In the some sample like "Binding of Hierarchy Data Structure to Tree view Control
(http://www.codeproject.com/Articles/140827/Dynamic-Binding-Of-Hierarchy-Data-Structure-To-Tre)
there is one table " tbl_Tree_Hierarchy" , in this table there is one column it's name is "under_parent" for the root its value is "0" but for some others I do not know how it's value has been defined.
I can understand level depth but under_parent for me is difficult. please help how we have to define value for that.
Best Regards
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