[VB.net Source] cvn-Generating Pattern

Hey,

This is a pretty nice Pattern-Function for perfect Usernamegenerating/Password's.

c: There is a random consonant (all letters except vowels) generated (uppercase and lowercase letters are differentiated)
v: There is a random vowel (a, e, i, o, u) generated (uppercase and lowercase letters are differentiated)
n: There is a random number generated between 0-9 remaining: All other characters stand for themselves

Code:

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    Private Const Konsonanten As String = "BCDFGHJKLMNPQRSTVWXYZ"
    Private Const Vokale As String = "AEIOU"
    Private Const Digits As String = "0123456789"

    Private Function cvnpattern(ByVal input As String) As String

        Dim r As New Random
        Dim sb As New System.Text.StringBuilder

        Dim escaped As Boolean = False
        For Each c In input
            If escaped Then
                sb.Append(c)
                escaped = False
            Else
                Select Case c
                    Case "C"c
                        sb.Append(Konsonanten(r.Next(0, Konsonanten.Length)))
                    Case "c"c
                        sb.Append(Konsonanten(r.Next(0, Konsonanten.Length)).ToString.ToLower)
                    Case "V"c
                        sb.Append(Vokale(r.Next(0, Vokale.Length)))
                    Case "v"c
                        sb.Append(Vokale(r.Next(0, Vokale.Length)).ToString.ToLower)
                    Case "N"c
                        sb.Append(Digits(r.Next(0, Digits.Length)))
                    Case "n"c
                        sb.Append(Digits(r.Next(1, Digits.Length)))
                    Case Else
                        sb.Append(c)
                End Select

            End If

        Next

        Return sb.ToString

    End Function

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Have fun with it

Greetings JStyler