避免系统卷信息文件夹

Question

我正在使用以下代码来获取目录信息。如果我搜索topleveldirectory它会很好。 但是当我搜索alldirectories时，它会达到系统级信息并抛出错误。 有没有办法避免搜索系统级信息文件夹？ 感谢

Imports System.IO
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim di As New DirectoryInfo("d:\"), i As Integer
        Dim aryFiles() As FileInfo = di.GetFiles("*.doc", SearchOption.TopDirectoryOnly)
        For i = LBound(aryFiles) To UBound(aryFiles)
            MsgBox(aryFiles(i).FullName)
        Next i
    End Sub
End Class

Answer 1

这段代码可以帮到你。

Imports System.IO

Module Module1

    Sub Main()
        Dim folders = New DirectoryInfo("D:\").GetDirectories
        Dim files = New List(Of FileInfo)

        For Each folder In From d In folders Where d.Name <> "System Volume Information"
            files.AddRange(folder.GetFiles("*.doc", SearchOption.TopDirectoryOnly))
        Next

        For Each File In files
            MsgBox(File.FullName)
        Next
    End Sub

End Module

我假设您的项目是.NET 3.5或更高版本。如果假设错误，请通知我。

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修改
由于您的请求，我一起攻击代码以自动跳过无法访问的文件夹。我没有广泛地测试代码，所以我不能保证它没有错误。

Imports System.IO

Module Module1

    Sub Main()
        Dim folders = GetAllSubFolders("D:\Alex\Music")
        Dim files = New List(Of FileInfo)

        For Each folder In folders
            files.AddRange(folder.GetFiles("*.doc", SearchOption.TopDirectoryOnly))
        Next

        For Each File In files
            Console.WriteLine(File.FullName)
        Next

        Console.ReadLine()
    End Sub

    Function GetAllSubFolders(ByVal path As String) As IEnumerable(Of DirectoryInfo)
        Dim subFolders As New List(Of DirectoryInfo)

        Try
            subFolders.AddRange(New DirectoryInfo(path).GetDirectories())
        Catch ex As Exception
            'error handling code goes here'
        End Try

        Dim innerSubFolders As New List(Of DirectoryInfo)
        For Each folder In subFolders
            innerSubFolders.AddRange(GetAllSubFolders(folder.FullName))
        Next

        'add the inner sub folders'
        subFolders.AddRange(innerSubFolders)

        'return the directories'
        Return subFolders
    End Function

End Module