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;
using System.IO;

namespace chart
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        static int k = 0;
        public static double[,] odczyt (){
            string dane;
            double[,] tab = new double[4, 2];
            FileStream zapis;
            zapis = new FileStream("D://zad3.txt", FileMode.Truncate);
            StreamWriter sw = new StreamWriter(zapis);


            Random r = new Random();
            string srr;

            for (int i = 0; i < 4; i++)
            {
                for (int j = 0; j < 2; j++)
                {
                    tab[i, j] = r.NextDouble() * 13;
                    tab[i, j] = Math.Round(tab[i, j], 2);
                    srr = (tab[i, j].ToString()).Replace(",", ".");

                    Console.Write(srr + " ");
                    sw.Write(srr + " ");

                }

                Console.WriteLine();
                sw.WriteLine();
            }
            sw.Close();



            FileStream odczyt = new FileStream("D://zad3.txt", FileMode.Open);
            StreamReader sr = new StreamReader(odczyt);

            Console.WriteLine("Odczytujemy dane z zapisu");

            string[] str2;

            while ((dane = sr.ReadLine()) != null)
            {
                k++;

            }
            double[,] tab2 = new double[k, 2];
            sr.Close();
            odczyt = new FileStream("D://zad3.txt", FileMode.Open);
            sr = new StreamReader(odczyt);
            string dane2;
            for (int i = 0; i < k; i++)
            {

                dane2 = sr.ReadLine();
                str2 = dane2.Split(' ');
                dane2 = str2[0].Replace(".", ",");


                tab2[i, 0] = double.Parse(dane2);
                Console.Write(tab2[i, 0] + " ");
                dane2 = str2[1].Replace(".", ",");
                tab2[i, 1] = double.Parse(dane2);
                Console.Write(tab2[i, 1] + " ");


                Console.WriteLine();

            }
            sr.Close();

            Console.ReadLine();
            return tab2;
        }
        double a =12.34;
        double b = 23.67;
        double[,] tab = odczyt();
        private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < k; i++)
            {
                this.chart1.Series["punkty"].Points.AddXY(tab[i,0], tab[i,1]);

            }

        }
    }
}