Basic Calculator Using Visual Basic.Net


Basic Calculator using Visual Basic.Net

This tutorial will teach you how to create a basic calculator using the four operations of Mathematics in Visual Basic.Net. The following math operations are the common features in all program algorithm. Please follow step by step to complete this tutorial.

Basic Calculator using Visual Basic.Net Steps

1. Insert windows form in your project and add the following object from your toolbox. 4 CheckBox, 3 Textbox, 1 Button. The form should look like the image below.

2. Double click your button to generate “private event button click” and insert the codes below. Remember that you need to rename all the elements of your form for fast coding.

  1. If CheckBox1.Checked = True Then
  2. TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
  3. ElseIf CheckBox2.Checked = True Then
  4. TextBox3.Text = Val(TextBox1.Text) - Val(TextBox2.Text)
  5. ElseIf CheckBox3.Checked = True Then
  6. TextBox3.Text = Val(TextBox1.Text) / Val(TextBox2.Text)
  7. ElseIf CheckBox4.Checked = True Then
  8. TextBox3.Text = Val(TextBox1.Text) * Val(TextBox2.Text)
  9. Else
  10. MsgBox("No operation selected!", MsgBoxStyle.Exclamation)
  11. End If

The code uses “if statement” with Boolean condition. CheckBox1 for Addition, CheckBox2 for Subtraction, CheckBox3 for Division, and CheckBox4 for Multiplication. If no operation selected, the program display the “No operation selected!” error message.

3. Your final output.

No operation selected

With complete Value

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