主题：[求助]狐爸例子照抄也能错？

Dim trv1 As WinForm.TreeView = e.Form.Controls("TreeView1")
Dim trv2 As WinForm.TreeView = e.Form.Controls("TreeView2")
trv1.BuildTree("授权","分组|权限")
For Each u As UserInfo In Users
    If u.Type = UserTypeEnum.User Then
        If trv2.Nodes.Contains(u.Group) = False Then
            trv2.Nodes.Add(u.Group)
        End If
        trv2.Nodes(u.Group).Nodes.Add(u.Name)    '----经调试，错在这一句
    End If
Next
Trv1.Nodes(0).Expand()
trv2.ExpandAll()

目录树形式的授权
此主题相关图片如下：qq截图20140422143718.jpg