.net - 如何从文件夹中删除特定类型的所有文件

Question

我正在使用以下代码删除特定文件夹中的所有文件:

Sub DeleteFilesFromFolder(Folder As String)
    If Directory.Exists(Folder) Then
        For Each _file As String In Directory.GetFiles(Folder)
            File.Delete(_file)
        Next
        For Each _folder As String In Directory.GetDirectories(Folder)

            DeleteFilesFromFolder(_folder)
        Next

    End If

End Sub

调用函数:

DeleteFilesFromFolder("C:\New Folder")

现在，我想删除所有 *.pdf新文件夹中的文档。如何只删除 *.pdf文件夹(包括子文件夹)中的文件？

Answer 1

Directory.GetFiles()允许您应用搜索模式并返回与此模式匹配的文件。

Sub DeleteFilesFromFolder(Folder As String)
    If Directory.Exists(Folder) Then
        For Each _file As String In Directory.GetFiles(Folder, "*.pdf")
            File.Delete(_file)
        Next
        For Each _folder As String In Directory.GetDirectories(Folder)
            DeleteFilesFromFolder(_folder)
        Next
    End If
End Sub

查看 MSDN 链接以获取更多信息: http://msdn.microsoft.com/en-us/library/wz42302f%28v=vs.110%29.aspx