Home work - stews

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Home_Work
{
    class Program
    {
        static void Main()
        {
            Database database = new Database();
            database.Work();
        }
    }

    class Database
    {
        private List<Stew> _stews;
        private int _thisYear;

        public Database()
        {
            _stews = new List<Stew>();
            Fill();
            _thisYear = 2022;
        }

        public void Work()
        {
            bool isWorking = true;
            List<Stew> stews = _stews;
            int number;

            while(isWorking == true)
            {
                Console.WriteLine("Тушёнка: ");
                ShowSelection(stews);
                Console.WriteLine("\n1. Найти просроченные.\n2. Выход.");
                Console.Write("Введите команду: ");
                number = GetNumber();

                switch (number)
                {
                    case 1:
                        stews = FindExpiredStews();
                        break;

                    case 2:
                        isWorking = false;
                        break;

                    default:
                        Console.WriteLine("Неверная команда.");
                        break;
                }

                Console.ReadKey();
                Console.Clear();
            }
        }

        private int GetNumber()
        {
            bool isConverted = false;
            int number = 0;
            string userInput;

            while (isConverted == false)
            {
                userInput = Console.ReadLine();
                isConverted = Int32.TryParse(userInput, out number);
            }

            return number;
        }

        private List<Stew> FindExpiredStews()
        {
            var sortedStews = _stews.Where(stew => stew.ProductionYear + stew.BestBeforeate < _thisYear).ToList();

            return sortedStews;
        }

        private void ShowSelection(List<Stew> stews)
        {
            foreach (Stew stew in stews)
            {
                stew.ShowInfo();
            }
        }

        private void Fill()
        {
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
            _stews.Add(new Stew());
        }
    }

    class Stew
    {
        private static Random _random;
        private NameStew _fullName;
        private int _productionYear;
        private int _bestBeforeate;

        static Stew()
        {
            _random = new Random();
        }

        public Stew()
        {
            int maxBestBeforeate = 10;
            int startYearProduced = 2010;
            int finishYearProduced = 2020;
            int countName = Enum.GetNames(typeof(NameStew)).Length;

            _fullName = (NameStew)_random.Next(countName);
            _bestBeforeate = _random.Next(maxBestBeforeate);
            _productionYear = _random.Next(startYearProduced, finishYearProduced);
        }

        public int ProductionYear => _productionYear;
        public int BestBeforeate => _bestBeforeate;

        public void ShowInfo()
        {
            Console.WriteLine($"{_fullName}. Дата игротовления: {_productionYear}. Срок годности: {_bestBeforeate}.");
        }
    }

    enum NameStew
    {
        OVA,
        MainProduct,
        Juicy,
        Finnika
    }
}