Contoh Program Perulangan Menggunakan Case, For, While, Do While Pada VB 2008



1.Struktur keputusan menggunakan case




Gambar 1.2 Desain Program


Kode Program

Public Class Form1

    Private Sub BtnBersih_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnBersih.Click
        TxtHadiah.Clear()
        TxtJPR.Clear()
    End Sub

    Private Sub BtnTutup_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnTutup.Click
        End
    End Sub

    Private Sub BtnProses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnProses.Click
        Select Case Val(TxtJPR.Text)
            Case Is <= 1000
                TxtHadiah.Text = "Mug Cantik"
            Case Is <= 1500
                TxtHadiah.Text = "Boneka Cantik"
            Case Is <= 2000
                TxtHadiah.Text = "Kipas Angin"
            Case Is <= 2500
                TxtHadiah.Text = "Dispenser"
            Case Else
                TxtHadiah.Text = "Tidak Ada"

        End Select
    End Sub
End Class



Gambar 1.2 Hasil Proses




Gambar 1.3 Tampilan Bersih




2.Program menggunakan  Select Case To Case



Gambar 1.4 Desain Program


Kode Program





Gambar 1.5 Hasil Proses



Gambar 1.6 Tampilan Bersih



3.Contoh Program Menggunakan If Then Else



Gambar 1.7 Desain Grafis


Kode Program







Gambar 1.8 Hasil Proses




Gambar 1.9 Tampilan Penutup



4.Contoh Program Menggunakan Perulangan For



Gambar 1.10 Desain Program


Kode Program

Public Class Form1

    Private Sub BtnProses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnProses.Click
        Dim i As Integer
        ListBox1.Items.Clear()
        For i = 1 To 10
            ListBox1.Items.Add("Visual Basic")
        Next
    End Sub
End Class




Gambar 2.1 Hasil Proses

 5.Contoh Program Menggunakan Do While


Gambar 2.2 Desain Program


Kode Program

Public Class Form2

    Private Sub BtnProses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnProses.Click
        Dim i As Integer
        i = 1

        ListBox1.Items.Clear()
        Do While i <= 10
            ListBox1.Items.Add(i)
            i = i + 1
        Loop
    End Sub
End Class



Gambar 2.3 Hasil Proses

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