TUTORIAL MEMBUAT KALKULATOR DENGAN VISUAL BASIC 2010

Program yang akan dibuat di dalam program visual basic 2010 ini adalah sebuah kalkulator sederhana. Tujuan pembuatan kalkulator ini adalah untuk memudahkan dalam perhitungan suatu angka, di dalam kalkulator ini terdapat beberapa jenis operasi angka, yaitu penjumlahan, pengurangan, perkalian, pembagian, dan akar kuadrat. Cara pemakaian dari kalkulator ini sama seperti kalkulator pada umumnya. Untuk lebih jelasnya tentang cara pembuatan kalkulator ini bias dilihat pada tutorial berikut ini:

Bukalah program Visual Basic 2010 pada computer anda.

1. Setelah jendela Visual Basic terbuka, maka pilihlah file -> new project->windows forms applications pada menu tab seperti gambar di bawah ini

2. Setelah itu, akan muncul sebuah form yang berjudul form1 . Kita dapat memberi nama form tersebut dengan mengubah nama pada properties nya, dalam hal ini nama form1 diganti dengan nama “CALCULATOR” . setelah itu untuk menambahkan tombol-tombol angka, tombol-tombol operasi, dan juga input angka pada kalkulator yang akan kita buat, kita dapat menambahkan textbox untuk kotak memasukkan angka pada kalkulator dan menggunakan button untuk tombol-tombol angka dan pengoperasian pada kalkulator. Texbox dan button diatur sedemikian rupa sehingga terlihat seperti pada gambar di bawah ini




Apabila form sudah dibuat sepert pada gambar di atas, dilanjutkan dengan memasukkan listing agar kalkulator tersebut dapat digunakan. Listing pada pembuatan kalkulator di atas adalah:




Public Class Form1
Dim nilai, Hasil, Angka As Double
Dim pattern As String


Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click
TextBox1.Text = TextBox1.Text & “0”
End Sub

Private Sub Button12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button12.Click
TextBox1.Text = TextBox1.Text & “1”
End Sub

Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
TextBox1.Text = TextBox1.Text & “2”
End Sub

Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
TextBox1.Text = TextBox1.Text & “3”
End Sub

Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
TextBox1.Text = TextBox1.Text & “4”
End Sub

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
TextBox1.Text = TextBox1.Text & “5”
End Sub

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
TextBox1.Text = TextBox1.Text & “6”
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = TextBox1.Text & “7”
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox1.Text = TextBox1.Text & “8”
End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
TextBox1.Text = TextBox1.Text & “9”
End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
nilai = TextBox1.Text
pattern = “/”
TextBox1.Text = “”
End Sub

Private Sub Button17_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button17.Click
TextBox1.Text = Nothing
nilai = Nothing
Hasil = Nothing
Angka = Nothing
pattern = Nothing
End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
nilai = TextBox1.Text
pattern = “*”
TextBox1.Text = “”
End Sub

Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
nilai = TextBox1.Text
pattern = “-”
TextBox1.Text = “”
End Sub

Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click
nilai = TextBox1.Text
pattern = “+”
TextBox1.Text = “”
End Sub

Private Sub Button18_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button18.Click
nilai = TextBox1.Text
pattern = “^”
TextBox1.Text = “”
End Sub

Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click
TextBox1.Text = TextBox1.Text & “.”
End Sub

Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click
If pattern = “+” Then
Hasil = nilai + Val(TextBox1.Text)
TextBox1.Text = Format(Hasil)
ElseIf pattern = “-” Then
Hasil = nilai – Val(TextBox1.Text)
TextBox1.Text = Format(Hasil)
ElseIf pattern = “*” Then
Hasil = nilai * Val(TextBox1.Text)
TextBox1.Text = Format(Hasil)
ElseIf pattern = “/” Then
Hasil = nilai / Val(TextBox1.Text)
TextBox1.Text = Format(Hasil)
ElseIf pattern = “^” Then
Hasil = nilai ^ Val(TextBox1.Text)
TextBox1.Text = Format(Hasil)
End If
Angka = “0”
End Sub

Private Sub Button19_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button19.Click
TextBox1.Text = TextBox1.Text ^ 0.5
End Sub

Private Sub Button20_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button20.Click
TextBox1.Text = TextBox1.Text & “00”
End Sub

Private Sub Button23_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button23.Click
Close()
End Sub
Private Sub Button22_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button22.Click
TextBox1.Enabled = True
Button1.Enabled = True
Button2.Enabled = True
Button3.Enabled = True
Button4.Enabled = True
Button5.Enabled = True
Button6.Enabled = True
Button7.Enabled = True
Button8.Enabled = True
Button9.Enabled = True
Button10.Enabled = True
Button11.Enabled = True
Button12.Enabled = True
Button13.Enabled = True
Button14.Enabled = True
Button15.Enabled = True
Button16.Enabled = True
Button17.Enabled = True
Button18.Enabled = True
Button19.Enabled = True
Button20.Enabled = True
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TextBox1.Enabled = False
Button1.Enabled = False
Button2.Enabled = False
Button3.Enabled = False
Button4.Enabled = False
Button5.Enabled = False
Button6.Enabled = False
Button7.Enabled = False
Button8.Enabled = False
Button9.Enabled = False
Button10.Enabled = False
Button11.Enabled = False
Button12.Enabled = False
Button13.Enabled = False
Button14.Enabled = False
Button15.Enabled = False
Button16.Enabled = False
Button17.Enabled = False
Button18.Enabled = False
Button19.Enabled = False
Button20.Enabled = False
End Sub

Private Sub Button21_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button21.Click
TextBox1.Enabled = False
Button1.Enabled = False
Button2.Enabled = False
Button3.Enabled = False
Button4.Enabled = False
Button5.Enabled = False
Button6.Enabled = False
Button7.Enabled = False
Button8.Enabled = False
Button9.Enabled = False
Button10.Enabled = False
Button11.Enabled = False
Button12.Enabled = False
Button13.Enabled = False
Button14.Enabled = False
Button15.Enabled = False
Button16.Enabled = False
Button17.Enabled = False
Button18.Enabled = False
Button19.Enabled = False
Button20.Enabled = False
End Sub
End Class


Setelah semua listing tersebut dimasukkan, kita dapat menggunakan kalkulator tersebut dengan cara running( menekan F5) pada Visual Basic.

Selamat mencobasahabat Jie Two