主题：[求助]目录树节点Datarow属性问题

根据级点生成的目录树，无法返回Datarow属性

下面代码报错

Dim tv As WinForm.TreeView = e.Form.Controls("菜单目录树")
Dim tbl As Table = Tables(e.Form.Name & "_菜单表")

tv.GenerateTree(tbl.DataTable,"级码","菜单名称",".")
For Each nd As WinForm.TreeNode In tv.AllNodes
    nd.tag = nd.DataRow("菜单ID")
    nd.Text = nd.DataRow("菜单标题")
Next