主题：指定选择目录树

 循环这个目录树，判断值是否相同即可，现在你是哪里遇到问题？

 请上传具体例子。

SelectedIndexChanged 事件

'''...
Dim fdr As DataRow = DataTables("ヤフオク_カテゴリ").Find("カテゴリID = '" & e.Sender.Text & "'")
If fdr IsNot Nothing Then
    dim trv as WinForm.TreeView = e.Form.Controls("TreeView1")
    For Each nd As WinForm.TreeNode In trv.AllNodes
        If nd.FullPath = fdr("カテゴリ").replace(" > ", "\") Then
            trv.SelectedNode = nd
            nd.ExpandAll
            exit for
        end if
    Next
End If