主题：目录树，我可以一进窗体就打开到我指定的某一层吗

这个意思？

Dim trv2 As WinForm.TreeView = e.Form.Controls("TreeView2")
For Each nd As WinForm.TreeNode In trv.AllNodes
    If nd.FullName = "aaabbbccc" Then
        nd.ExpandAll
    End If
Next