Imports System
Imports System.IO



Module PathExample

    Sub Main()
        ' Get a list of invalid path characters.
        Dim invalidPathChars As Char() = Path.GetInvalidPathChars()

        Console.WriteLine("The following characters are invalid ina path:")

        ' Display each invalid character to the console.
        Dim invalidPChar As Char
        For Each invalidPChar In invalidPathChars
            Console.WriteLine(invalidPChar)
        Next invalidPChar

        ' Get a list of invalid file characters.
        Dim invalidFileChars As Char() = Path.GetInvalidFileNameChars()

        Console.WriteLine("The following characters are invalid ina path:")

        ' Display each invalid character to the console.
        Dim invalidFChar As Char
        For Each invalidFChar In invalidFileChars
            Console.WriteLine(invalidFChar)
        Next invalidFChar

        Console.ReadLine()

    End Sub
End Module
' Note that while this code attempts to display a list of all invalid
' characters in paths and filenames, not all of the characters are
' within the displayable set of characters. Because the list of invalid
' characters can vary, based on the system, output for this code can vary.