calculator

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace electricalCalculatorForm
{
    public partial class Form1 : Form
    {
        string Operation;
        double input1, input2, input3, input4, input5;
        double answer1, answer2, answer3, answer4, answer5;
        bool aaa = false;
        String mainAnswer;
        public Form1()
        {

            InitializeComponent();
        }
        private void exitCalculationSelection_Click(object sender, EventArgs e)
        {
            buttonSelection.Enabled = true;
            calculatorBits.Enabled = true;
        }

        #region Calaculator Number Bits
        //--------------------CALCULATOR NUMBERS BIT--------------------\\
         //in design these are assembled in a keypad-looking thing and there's a label where the numbers pressed are stored.
         //the label where the numbers are stored is called "calculatorNumbers"
        private void oneButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "1";
        }

        private void twoButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "2";
        }

        private void threeButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "3";
        }

        private void fourButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "4";
        }
        private void fiveButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "5";
        }

        private void sixButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "6";
        }

        private void sevenButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "7";
        }

        private void eightButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "8";
        }

        private void nineButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "9";
        }

        private void zeroButton_Click(object sender, EventArgs e)
        {
            calculatorNumbers.Text = calculatorNumbers.Text + "0";
        }
        #endregion
        #region calculation selection
        private void thing_Click(object sender, EventArgs e)
        {
            buttonSelection.Enabled = false;
            calculatingStatus.Text = "Enter a number"; //lets say this number is "20"
            if (aaa == true) //theoretically when nextCalculationStep is pressed, it sets "aaa" as true
            {
                aaa = false; //then it sets "aaa" as false
                calculatorNumbers.Text = Convert.ToString(input1); //stores "input1" as "20"
                calculatorNumbers.Clear(); //clears "calculatorNumbers" (where the numbers are stored)...
                calculatingStatus.Text = "Enter another number"; //lets say this number is "5"
                if (aaa == true) //then theoretically when the button is clicked again, "aaa" is true again and continues
                {
                    calculatorNumbers.Text = Convert.ToString(input2); //stores "5" as input2
                    answer1 = input1 * input2; //stores answer1 as (20 x 5 = 100), so answer1 == "100"
                    mainAnswer = Convert.ToString(answer1); //converts answer1 (double) to a string in mainAnswer
                    answerCalculation.Text = mainAnswer; //outputs mainAnswer (which should be 100) in a label.
                }
            }
        }
        #endregion

        private void nextCalculationStep_Click(object sender, EventArgs e)
        {
            aaa = true;
            //calculatorNumbers.Text = String.Empty; //ignore
        }
    }
}