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 ef5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label4.Text = null;
            label5.Text = null;
            string s1 = textBox1.Text;
            string s2 = textBox2.Text;
            string s3 = textBox3.Text;
            double a, b, c;
            if (double.TryParse(s1, out a))
            {
                if (double.TryParse(s2, out b))
                {
                    if (double.TryParse(s3, out c))
                    {
                        if (a > 0.0 && b > 0.0 && c > 0.0)
                        {

                            double P = 2 * a * b + 2 * b * c + 2 * a * c;
                            double V = a * b * c;
                            label4.Text = "P = " + P.ToString();
                            label5.Text = "V = " + V.ToString();
                        }
                        else
                            label4.Text = "Liczby powinny być większe od zera";
                    }
                    else
                        label4.Text = "Niepoprawna liczba!";
                }
                else
                    label4.Text = "Niepoprawna liczba!";

            }
            else label4.Text = "Niepoprawna liczba!";
        }


        private void label2_Click(object sender, EventArgs e)
        {
        }

        private void label4_Click(object sender, EventArgs e)
        {

        }

    }
        }