Sorting alphanumerically...

This is a continuation of this thread:

http://www.vbforums.com/showthread.php?t=538296

I was interested to see if sorting alphanumerically was the same as sorting by a characters ASCii code so I wrote the following code:

(to use it copy into a form containing a single list box)

Code:

---

Private Sub Form_Load()
    Dim blnCharacterUsed(0 To 255) As Boolean
    Dim lngCurrentLowest As Long
    Dim i As Long
    Dim j As Long
   
    List1.Clear
   
    For i = 0 To 255
        lngCurrentLowest = -1
        For j = 0 To 255
            If Not blnCharacterUsed(j) Then
                If lngCurrentLowest = -1 Then
                    lngCurrentLowest = j
                Else
                    If Chr(lngCurrentLowest) > Chr(j) Then
                        lngCurrentLowest = j
                    End If
                End If
            End If
        Next j
        blnCharacterUsed(lngCurrentLowest) = True
        List1.AddItem CStr(lngCurrentLowest)
    Next i
   
End Sub

---

And I found that up to 128 all the ascii values are in order, but then it gets a bit weird... anyone know why? I'm thinking it's got something to do with unicode but I don't know enough about it to fully explain :(