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 WindowsFormsApp1._1._5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }

        private void calc_Click(object sender, EventArgs e)
        {
            if (double.TryParse(textBox1.Text, out double num1) && double.TryParse(textBox2.Text, out double num2))
            {
                string selectedOperation = comboBox1.SelectedItem.ToString();
                double result = 0;

                switch (selectedOperation)
                {
                    case "Addition(+)":
                        result = num1 + num2;
                        sonuclar.Items.Add(result);
                        break;
                    case "Subtraction(-)":
                        result = num1 - num2;
                        sonuclar.Items.Add(result);

                        break;
                    case "Multiplication(*)":
                        result = num1 * num2;
                        sonuclar.Items.Add(result);

                        break;
                    case "Division(/)":
                        if (num2 != 0)
                        {
                            
                            sonuclar.Items.Add(result);
                            result = num1 / num2;
                        }
                        else
                        {
                            MessageBox.Show("Cannot divide by zero.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            return;
                        }
                        break;
                    default:
                        MessageBox.Show("Invalid operation selected.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        return;
                }

                MessageBox.Show($"Result: {result}", "Calculation Result", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show("Invalid input. Please enter valid numbers.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (sonuclar.SelectedIndex != -1)
            {
                sonuclar.Items.RemoveAt(sonuclar.SelectedIndex);
            }
            else
            {
                MessageBox.Show("Please select an item to delete.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void sonuclar_SelectedIndexChanged(object sender, EventArgs e)
        {

        }
        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.Items.Add("Addition(+)");
            comboBox1.Items.Add("Subtraction(-)");
            comboBox1.Items.Add("Multiplication(*)");
            comboBox1.Items.Add("Division(/)");

            comboBox1.SelectedIndex = 0;

        }
    }
}