无忧岛

这三个控件在.NET的工具箱里面默认是没有的,需要手工添加
右击工具箱中的任意单元 点击选择项
然后在.NET Framework组件中找到对应的选项在前面勾上即可.
附三者的关系代码,三者控件名分别为 drive1 dir1,实现代码:

    Private Sub Drive1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Drive1.SelectedIndexChanged
        Dir1.Path = Drive1.Drive
    End Sub

    Private Sub Dir1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Dir1.SelectedIndexChanged
        File1.Path = Dir1.Path
    End Sub