Visual Basic中的Oring文件扩展名

Question

For Each File As String In My.Computer.FileSystem.GetFiles(Line, FileIO.SearchOption.SearchTopLevelOnly, "*.txt|*.docx")

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is it right to OR extensions this way? I just need to get the txt and docx files

Answer 1

If you look at this MSDN Forum Post it suggests that using an array to hold the file extensions like this will work. Using an Or statement like you have will give you an error.

Dim line As String = "C:\Temp"
Dim extension(1) As String
extension(0) = "*.txt"
extension(1) = "*.docx"

For Each File As String In My.Computer.FileSystem.GetFiles(Line, FileIO.SearchOption.SearchTopLevelOnly, extension)

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Answer 2

    Dim extension As New List(Of String)
    extension.Add("*.avi")
    extension.Add("*.mkv")
    extension.Add("*.wmv")
    extension.Add("*.mp4")

For Each F In My.Computer.FileSystem.GetFiles("c:\\yourPath", FileIO.SearchOption.SearchAllSubDirectories, extension.ToArray)

' do it

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