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

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

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