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

namespace WindowsFormsApp5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void monthCalendar1_DateChanged(object sender, DateRangeEventArgs e)
        {
            DateTime selectedDate = e.Start;
            string formattedDate = string.Format("{0} {1} {2}", selectedDate.DayOfYear, selectedDate.ToString("MMMM", new CultureInfo("pl-PL")), ToRoman(selectedDate.Year));
            label1.Text = formattedDate;
        }

        private string ToRoman(int number)
        {
            if ((number < 0) || (number > 3999)) return string.Empty;
            if (number < 1) return string.Empty;
            if (number >= 1000) return "M" + ToRoman(number - 1000);
            if (number >= 900) return "CM" + ToRoman(number - 900);
            if (number >= 500) return "D" + ToRoman(number - 500);
            if (number >= 400) return "CD" + ToRoman(number - 400);
            if (number >= 100) return "C" + ToRoman(number - 100);
            if (number >= 90) return "XC" + ToRoman(number - 90);
            if (number >= 50) return "L" + ToRoman(number - 50);
            if (number >= 40) return "XL" + ToRoman(number - 40);
            if (number >= 10) return "X" + ToRoman(number - 10);
            if (number >= 9) return "IX" + ToRoman(number - 9);
            if (number >= 5) return "V" + ToRoman(number - 5);
            if (number >= 4) return "IV" + ToRoman(number - 4);
            if (number >= 1) return "I" + ToRoman(number - 1);
            return string.Empty;
        }

    }
}