Pertemuan 11, 4 Mei 2015 : Membuat Aplikasi Konverter Ukuran Sederhana Menggunakan Microsoft Visual Basic 2010 Express

1. Buka aplikasi VISUAL BASIC 2010 EXPRESS, lalu setelah program terbuka, klik FILE > New Project, maka akan muncul windows pop-up, lalu pilih “Windows Form Application”. Jika sudah di pilih isikan Nama nya dengan “Aplikasi Konverter Ukuran” dan Tempat Penyimpan project yang nanti akan di buat pada Name dan Location jika sudah klik Ok.

 

2. Dilangkah ini kita akan menggunakan sebuah MDI Form, untuk menambahkan sebuah file MDI Form, langkahnya sebagai berikut : Klik PROJECT >> Add Windows Form >> Muncul Windows Pop Up, lalu pilih MDI Parent Form

3. Design MDI Form nya seperti ini :

 

 4. Buat sebuah Form baru dengan nama “MetertoInchies” dengan cara : klik Project >> Add Windows Form >> Lalu pilih “Windows Form”. dan design Form nya seperti gambar di bawah ini :

Komponen-komponen yang dibutuhkan :

• 1 Buah TextBox : (name) : txtMeters
• 1 Buah Label : Text : Enter the Number of Meters
• 4 Buah Button :
• Button 1 : (name) : btnConvertToInches | Text : Convert to Inches
• Button 2 : (name) : btnConvertToFeet | Text : Convert to Feet
• Button 3 : (name) : btnConvertToYard | Text : Convert to Yard
• Button 4 : (name) : btnExit | Text : Exit

Tambahkan koding ini ke btnConvertToInches (Button 1) :

Private Sub btnConvertToInches_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToInches.Click

Dim dblMeters As Double

Dim dblInches As Double

Try

dblMeters = CDbl(txtMeters.Text)

dblInches = MetersToInches(dblMeters)

MessageBox.Show(dblMeters.ToString() & ” Meters equals ” & dblInches.ToString() & ” Inches”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnConvertToFeet (Button 2) :

Private Sub btnConvertToFeet_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToFeet.Click

Dim dblMeters As Double

Dim dblFeet As Double

Try

dblMeters = CDbl(txtMeters.Text)

dblFeet = MetersToFeet(dblMeters)

MessageBox.Show(dblMeters.ToString() & ” Meters equals ” & dblFeet.ToString() & ” Feet”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnConvertToYard (Button 3) :

Private Sub btnConvertToYard_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToYard.Click

Dim dblMeters As Double

Dim dblYard As Double

Try

dblMeters = CDbl(txtMeters.Text)

dblYard = MetersToYard(dblMeters)

MessageBox.Show(dblMeters.ToString() & ” Meters equals ” & dblYard.ToString() & ” Yard”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnExit (Button 4) :

Private Sub btnExit_Click(sender As System.Object, e As System.EventArgs) Handles btnExit.Click

Me.Close()

End Sub

5. Buat sebuah Form baru dengan nama “InchiesToMeter.vb” dengan cara : klik Project >> Add Windows Form >> Lalu pilih “Windows Form”. dan design Form nya seperti gambar di bawah ini :

Komponen-Komponen yang dibutuhkan :

• 1 Buah Label : Text : Enter the Number of Inches
• 1 Buah TextBox : (name) : txtInches
• 4 Buah Button :
  • Button 1 : (name) : btnConvertToMiliMeters | Text : Convert to Milimeters
  • Button 2 : (name) : btnConvertToCentiMeters | Text : Convert to Centimeters
  • Button 3 : (name) : btnConvertToMeters | Text : Convert to Meters
  • Button 4 : (name) : btnExit | Text : Exit

Tambahkan koding ini ke btnConvertToMiliMeters (Button 1) : 

Private Sub btnConvertToMiliMeters_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToMiliMeters.Click

Dim dblInches As Double

Dim dblMiliMeters As Double        Try

dblInches = CDbl(txtInches.Text)

dblMiliMeters = InchesToMili(dblInches)

MessageBox.Show(dblInches.ToString() & ” Inches equals ” & dblMiliMeters.ToString() & ” MiliMeters”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnConvertToCentiMeters (Button 2) :

Private Sub btnConvertToCM_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToCentiMeters.Click

Dim dblInches As Double

Dim dblCentiMeters As Double        Try

dblInches = CDbl(txtInches.Text)

dblCentiMeters = InchesToCenti(dblInches)

MessageBox.Show(dblInches.ToString() & ” Inches equals ” & dblCentiMeters.ToString() & ” CentiMeters”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnConvertToMeters (Button 3) :

Private Sub btnConvertToMeters_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvertToMeters.Click

Dim dblInches As Double

Dim dblMeters As Double        Try

dblInches = CDbl(txtInches.Text)

dblMeters = InchesToMeters(dblInches)

MessageBox.Show(dblInches.ToString() & ” Inches equals ” & dblMeters.ToString() & ” Meters”)

Catch

MessageBox.Show(“Error: Enter a number value”)

End Try

End Sub

Tambahkan koding ini ke btnExit (Button 4) :

Private Sub btnExit_Click(sender As System.Object, e As System.EventArgs) Handles btnExit.Click

Me.Close()

End Sub

6. Tambahkan koding ini ke MDI Form yang telah kita buat tadi, dengan cara klik sembarang area di MDI Form:

Imports System.Windows.FormsPublic Class MDIParent1

Private Sub OpenFile(ByVal sender As Object, ByVal e As EventArgs)

Dim OpenFileDialog As New OpenFileDialog

OpenFileDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.MyDocuments

OpenFileDialog.Filter = “Text Files (*.txt)|*.txt|All Files (*.*)|*.*”

If (OpenFileDialog.ShowDialog(Me) = System.Windows.Forms.DialogResult.OK) Then

Dim FileName As String = OpenFileDialog.FileName

‘ TODO: Add code here to open the file.

End If

End Sub

Private Sub SaveAsToolStripMenuItem_Click(ByVal sender As Object, ByVal e As EventArgs)

Dim SaveFileDialog As New SaveFileDialog

SaveFileDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.MyDocuments

SaveFileDialog.Filter = “Text Files (*.txt)|*.txt|All Files (*.*)|*.*”

If (SaveFileDialog.ShowDialog(Me) = System.Windows.Forms.DialogResult.OK) Then

Dim FileName As String = SaveFileDialog.FileName

‘ TODO: Add code here to save the current contents of the form to a file.

End If

End Sub

Private Sub MeterstoInchesToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles MeterstoInchesToolStripMenuItem.Click

MetertoInches.Show()

End Sub

Private Sub ExitToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles ExitToolStripMenuItem.Click

Close()

End Sub

Private Sub INCHIESTOMETERSToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles INCHIESTOMETERSToolStripMenuItem.Click

InchiesToMeter.Show()

End Sub

End Class

7. Tambahkan sebuah Module untuk project ini, dengan cara Klik Project >> Add Class >> Pilih Module, beri nama “ConverterModule.vb”, dan tambahkan script sebagai berikut :

Module ConverterModule    Function MetersToInches(ByVal I As Integer)

MetersToInches = I * 39.3701

End Function

Function MetersToFeet(ByVal F As Integer)

MetersToFeet = F * 3.28084

End Function

Function MetersToYard(ByVal Y As Integer)

MetersToYard = Y * 1.09361

End Function

Function InchesToMili(ByVal MM As Integer)

InchesToMili = MM * 25.4

End Function

Function InchesToCenti(ByVal CM As Integer)

InchesToCenti = CM * 2.54

End Function

Function InchesToMeters(ByVal M As Integer)

InchesToMeters = M * 0.0254

End Function

End Module

8. Sekarang klik “Solution Project” di bagian Kanan Atas (Tepat dibawah tombol Close Program), pilih project anda yg sedang di buka (Aplikasi Konverter Ukuran), lalu klik kanan pada “My Project” >> Open >> Pada bagian STARTUP FORM pilih MDIParent1.

9. Selesai, maka setelah itu jalankan programnya dengan menekan tombol F5. Maka seperti ini lah hasil program yang kita buat. Lihat gambar.

 

Sekian dan Terima Kasih.