Illegal characters in path

[br00nage]

I have this code to copy directories:

Public Function CopyDirectory(ByVal Src As String, ByVal Dest As String, Optional _
  ByVal bQuiet As Boolean = False) As Boolean
        If Not IO.Directory.Exists(Src) Then
            Throw New DirectoryNotFoundException("The directory " & Src & " does not exists")
        End If
        If IO.Directory.Exists(Dest) AndAlso Not bQuiet Then
            If MessageBox.Show("directory " & Dest & " already exists." & vbCrLf & _
            "If you continue, any files with the same name will be overwritten", _
            "Continue?", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, _
            MessageBoxDefaultButton.Button2) = DialogResult.Cancel Then Exit Function
        End If

        'add Directory Seperator Character (\) for the string concatenation shown later
        If Dest.Substring(Dest.Length - 1, 1) <> Path.DirectorySeparatorChar Then
            Dest += Path.DirectorySeparatorChar
        End If
        If Not Directory.Exists(Dest) Then Directory.CreateDirectory(Dest)
        Dim Files As String()
        Files = Directory.GetFileSystemEntries(Src)
        Dim element As String
        For Each element In Files
            If Directory.Exists(element) Then
                'if the current FileSystemEntry is a directory,
                'call this function recursively
                CopyDirectory(element, Dest & Path.GetFileName(element), True)
            Else
                'the current FileSystemEntry is a file so just copy it
                File.Copy(element, Dest & Path.GetFileName(element), True)
            End If
        Next
        Return True
    End Function

But it can't really deal with illegal characters, as it errors out and highlights this line

File.Copy(element, Dest & Path.GetFileName(element), True)

Can anyone help?

Br00nage.

[Siddharth Rout]

What is the value of

element, Dest, Path.GetFileName(element)

at the time of error?

[br00nage]

I think it resovles to a font file which has "?" at the end of the file name which is obviously the illegal character.