Calculator Using Radio Button.

Calculator Using Radio Button In C# Using Windows Form Application

Steps To Perform Addition Of Two Numbers In C# Using Windows Form Application

Step No 1 :- Open Microsoft Visual Studio(version : In My Case 2015).

Step No 2 :-  Click On File, Select New, Then Click On Project.

Step No 3 :- Now, Here A New Window Will Appear, Now Give A Name According To Your Choice And Also Select Windows Form Application.

Step No 4 :- A New Form Will Appear.

Step No 5 :- At Left Position A toolbox Will Be There Using That Toolbox You Can Easily Add Tools For Your Windows Form Application.

Step No 6 :- Now Drag & Drop Tools From Toolbox.

Step No  :- 7 Now Using Label, Text-box & Button Make A Form Of Addition As Showed in Given Image

Step No 8 :- Now Double-Click On Total Button Because We Have To Perform Calculation(Arithmetic  Operations) When A User Click On Total Button.

Step No 9 :- Now Write This Code Which Is Given Below.

private void button1_Click(object sender, EventArgs e)

        {

            int a, b, c; 

            a = Convert.ToInt32(textBox1.Text);

            b = Convert.ToInt32(textBox2.Text);

           if (radioButton1.Checked)
            {
                c = a + b;
                textBox3.Text = c.ToString();
            }

            else if (radioButton2.Checked)
            {
                c = a - b;
                textBox3.Text = c.ToString();
            }

            else if (radioButton3.Checked)
            {
                c = a * b;
                textBox3.Text = c.ToString();
            }

            else if (radioButton4.Checked)
            {
                d = a / b;
                textBox3.Text = d.ToString();
            }

        }

Step No 10. Now Click On Start As Showed In Given Image.

Output :- 

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