File Safe Name

Question

Hello,
Is there any built-in method to get the safe name for a folder I'm gonna create?
I'm going to use Directory.CreateDirectory to make some folders, the names are parsed from a source and need to filter out illegal characters which are not allowed in the file/folder names!

There's a full list here:
https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file

Just wonder if there's a built-in .net method to validate?
Thanks.

Answer 1

A thought

    Private Function SafePath(path As String) As String  
        Static InvalidPathChars() As Char = IO.Path.GetInvalidPathChars  
        Dim rv As String = path  
        Try  
            IO.Path.GetFullPath(rv)  
        Catch ex As Exception  
            Dim p() As String = rv.Split(InvalidPathChars)  
            rv = String.Join("_"c, p)  
        End Try  
        Return rv  
    End Function  
  

Answer 2

I removed my first response in favor of the following.

Option Strict On  
Imports System.IO  
Imports System.Text.RegularExpressions  
  
Module Program  
    Sub Main(args As String())  
  
        Dim folderNames() As String = {"|OED", "!OED~", "<<Dir", "(Me&^"}  
  
        For Each name In folderNames  
            Console.WriteLine($"{name} is valid? {IsValidFolderName(name)}")  
        Next  
  
        Console.ReadLine()  
  
    End Sub  
End Module  
  
Public Module Directory  
    Private ReadOnly _illegalInFileName As New Regex($"[{Regex.Escape(  
        New String(Path.GetInvalidFileNameChars()))}]", RegexOptions.Compiled)  
  
    Public Function IsValidFolderName(folder As String) As Boolean  
        Return _illegalInFileName.Replace(folder, "") = folder  
    End Function  
End Module