ucet c#

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

namespace Cviko7._2 {

    class Polozka{
    public DateTime Datum { get; set; }
    public int Hodnota { get; set; }

    public Polozka(int hodnota)
    {
        Datum = DateTime.Now;
        Hodnota = hodnota;
    }
        public override string ToString()
        {
            return $"{Datum:MM/dd/yyyy} {Hodnota:C}";
        }
    }

    class Program
    {
        [STAThread]
        static void Main(string[] args)
        {
        //pokud chceme velmi rychle pridavat na konec a odebirat od konce pouzijeme tridu stack
        //Stack<int> zasobnik = new Stack<int>;
        BindingList<Polozka> Cisla = new BindingList<Polozka>()
            {
              new Polozka(5), new Polozka(6),new Polozka(7)

            };

            //fronta odebira a uklada na zacatek  Queue


            Form form = new Form();

            TableLayoutPanel panel = new TableLayoutPanel();
            panel.AutoSize = true;
            panel.AutoSizeMode = AutoSizeMode.GrowAndShrink;
            panel.Dock = DockStyle.Fill;

            panel.ColumnCount = 3;   //pocet sloupců
            panel.RowCount = 3;   //pocet radku

            panel.ColumnStyles.Add(new ColumnStyle(SizeType.AutoSize));
            panel.ColumnStyles.Add(new ColumnStyle(SizeType.AutoSize));
            panel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100));    //rozdeleni sloupcu,procentualni rozdeleni

            panel.RowStyles.Add(new RowStyle(SizeType.AutoSize));          //rozdelei radku
            panel.RowStyles.Add(new RowStyle(SizeType.AutoSize));          //rozdelei radku
            panel.RowStyles.Add(new RowStyle(SizeType.Percent, 100));


            panel.CellBorderStyle = TableLayoutPanelCellBorderStyle.Inset;


            NumericUpDown numericUpDown = new NumericUpDown() { DecimalPlaces = 0} ;
            Button buttonpsh = new Button() { Text = "Push" };
            buttonpsh.Click += (sender, e) =>
            {
                int nove = (int)numericUpDown.Value;
                Cisla.Add(new Polozka(nove));


            };

            ListBox list_box_buffer = new ListBox();

            list_box_buffer.Dock = DockStyle.Fill;
            list_box_buffer.DataSource = Cisla;

            BindingSource bs = new BindingSource(Cisla, null);


            DataGridView grid = new DataGridView();
            grid.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
            grid.Dock = DockStyle.Fill;
            grid.DataSource = bs;
            grid.AutoGenerateColumns = false;

            DataGridViewTextBoxColumn dtDatum = new DataGridViewTextBoxColumn();
            dtDatum.HeaderText = "Dátum a čas";
            dtDatum.DataPropertyName = nameof(Polozka.Datum);
            dtDatum.DefaultCellStyle.Format = "MM/dd/yyyy  HH:mm:ss.fff";

            //hodnota
            DataGridViewTextBoxColumn dtHodnota = new DataGridViewTextBoxColumn();
            dtHodnota.HeaderText = "Hodnota";
            dtHodnota.DataPropertyName = nameof(Polozka.Hodnota) ;
            dtHodnota.DefaultCellStyle.Format = "C";

            grid.Columns.Add(dtDatum);
            grid.Columns.Add(dtHodnota);



            TextBox textBox = new TextBox() { ReadOnly = true };
            Button buttonPop = new Button() { Text = "Pop" };
            buttonPop.Click += (sender, e) =>
            {
                if (Cisla.Count > 0)
                {
                    int lastIndex = Cisla.Count - 1;
                    Polozka posledni = Cisla[lastIndex];
                    Cisla.RemoveAt(lastIndex);

                    textBox.Text = posledni.ToString();
                }

             };

            Label radek_navic = new Label() { Text = "Zatim nic" };
            radek_navic.Dock = DockStyle.Fill;
            radek_navic.AutoSize = true;


            bs.Position = 0;
            bs.CurrentItemChanged += (sender, e) =>       //umoznuje zobrazit v lablu na co jsme klikli
            {
                Polozka aktualni = bs.Current as Polozka;
                if (aktualni != null)
                {
                    radek_navic.Text = aktualni.ToString();
                }


            };

            panel.Controls.Add(numericUpDown,0,0);   //cisla oznacuji radky,sloupce
            panel.Controls.Add(buttonpsh, 1, 0);
            panel.Controls.Add(grid, 2,0);
            panel.SetRowSpan(grid, 3);
            panel.SetRowSpan(list_box_buffer, 2);
            panel.Controls.Add(textBox, 0, 1);
            panel.Controls.Add(buttonPop, 1, 1);
            panel.Controls.Add(radek_navic, 0, 2);
            panel.SetColumnSpan(radek_navic, 2);
            form.Controls.Add(panel);


            form.Controls.Add(panel);

            Application.EnableVisualStyles();
            Application.Run(form);



        }
    }
}