vb.net的文件系统编程问题

Question

vb.net怎么没有DriveListBox控件和DirListBox控件和FileListBox控件啊，我在工具箱选项添加了也没用啊，还是我操作步骤错了，来个大神详细说明下嘛

Answer 1

DriveListBox控件、DirListBox控件和FileListBox控件是VB6.0才有的文件系统控件，在升级到VB.NET之后，已经不支持这几个控件了，取而代之的是
OpenFileDialog控件，能够完成同样类似的工作，给你个例子：

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
    OpenFileDialog1.InitialDirectory = "c:\"
    OpenFileDialog1.Filter = "EXCEL文件(*.xls)|*.xls"
    OpenFileDialog1.Multiselect = False
    OpenFileDialog1.ReadOnlyChecked = True
    If OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
        Dim myExcelFileName As New System.IO.StreamReader(OpenFileDialog1.FileName)
        MsgBox("打开的文件名是：" + OpenFileDialog1.FileName)
        Dim mExcelApplication As Object = CreateObject("Excel.Application")
        mExcelApplication.Workbooks.Open(Filename:=OpenFileDialog1.FileName)
        mExcelApplication.Visible = True   '如果隐式打开可以用False
        myExcelFileName.Close()
    End If
End Sub