Gronsfeld Chipper di Vb.net

berikut design Formnya:

Lalu ketik programnya:

Public Class Gransfeld_Chiper

    Private Sub hitung_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles hitung.Click

        Dim ind As Integer
        Dim huruf, kalimat As String
        Dim jumlah(25) As Integer
        kalimat = (input.Text).ToUpper
        For x = 1 To Microsoft.VisualBasic.Len(kalimat)
            huruf = kalimat.Substring(x - 1, 1)
            If (huruf >= "A") And (huruf <= "Z") Then
                ind = Asc(huruf) - 65
                jumlah(ind) += 1
            End If
        Next
        hasil.Text = ""
        For i As Integer = 0 To 25
            huruf = Chr(i + 65)
            If jumlah(i) > 0 Then
                hasil.Text = hasil.Text & huruf & " = " & jumlah(i) & vbCrLf
            End If
        Next
    End Sub

    Private Sub Gransfeld_Chiper_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        input.Text = ""
        hasil.Text = ""
    End Sub
End Class


Endingnya :