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 GeometricFigure
{
    public partial class Form1 : Form
    {
        private List<Figures> figures = new List<Figures>();
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            figures.Add(new FourSquare("Four square", 1.5f));
            figures.Add(new Triangle("Triagle", 2.5f, 4));
            figures.Add(new Circle("Circle", 3.5f));

            listBox1.DataSource = figures;
            listBox1.DisplayMember = "nameFigure";
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            textBox1.Text = ((Figures)listBox1.SelectedItem).GetSquare().ToString();
        }
    }
}