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How To Make A Calculator In Visual Basic 2008 / Visual Basic 2010

in , , , , , , - By - on 7/19/2012 - 44 comments
Today i will teach you how to make a calculator in VB.NET , making your own calculator would be awesome.
  1. open visual basic 2008 or visual basic 2010
  2. create a new project
  3. windows form/console application
  4. change your form size to 223, 274
  5. go to form1 properties and text name it whatever you want (calculator)
  6. add 18 buttons from the tool box
  7. add a textbox
  8. click textbox then properties and multiline and make it true
  9. click text box and properties and click font and make the font little bigger
  10. make the text box little bigger
  11. now change the button text to look like this
12 .now double click the form and delete everything

13 . then copy and paste this bunch of code

Option Explicit On
Public Class Form1
 
    'Author : Mohamed Shimran
    'Blog : http://www.ultimateprogrammingtutorials.info
 
    Dim FirstNumber As Single
    Dim SecondNumber As Single
    Dim AnswerNumber As Single
    Dim ArithmeticProcess As String
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text = TextBox1.Text & 1
    End Sub
 
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        TextBox1.Text = TextBox1.Text & 2
    End Sub
 
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        TextBox1.Text = TextBox1.Text & 3
    End Sub
 
    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        TextBox1.Text = TextBox1.Text & 4
    End Sub
 
    Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.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 Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
        TextBox1.Text = TextBox1.Text & 7
    End Sub
 
    Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
        TextBox1.Text = TextBox1.Text & 8
    End Sub
 
    Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
        TextBox1.Text = TextBox1.Text & 9
    End Sub
 
    Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
        TextBox1.Text = TextBox1.Text & 0
    End Sub
 
    Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
        TextBox1.Text = TextBox1.Text & "."
    End Sub
 
    Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click
        FirstNumber = Val(TextBox1.Text)
        TextBox1.Text = "0"
        ArithmeticProcess = "+"
    End Sub
 
    Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click
 
 
        FirstNumber = Val(TextBox1.Text)
        TextBox1.Text = "0"
        ArithmeticProcess = "-"
    End Sub
 
    Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click
        FirstNumber = Val(TextBox1.Text)
        TextBox1.Text = "0"
        ArithmeticProcess = "X"
    End Sub
 
    Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click
        FirstNumber = Val(TextBox1.Text)
        TextBox1.Text = "0"
        ArithmeticProcess = "/"
    End Sub
 
  
    Private Sub Button18_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button18.Click
        SecondNumber = Val(TextBox1.Text)
        If ArithmeticProcess = "+" Then
            AnswerNumber = FirstNumber + SecondNumber
        End If
        If ArithmeticProcess = "-" Then
            AnswerNumber = FirstNumber - SecondNumber
        End If
        If ArithmeticProcess = "X" Then
            AnswerNumber = FirstNumber * SecondNumber
        End If
        If ArithmeticProcess = "/" Then
            AnswerNumber = FirstNumber / SecondNumber
        End If
        TextBox1.Text = AnswerNumber
    End Sub
 
End Class
13 . now debug

14. enjoy

I did a tutorial about making an advanced calculator, you would love it : How To Make A Advance Calculator In VB.NET
Read more
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