C# топ-50 самых популярных слов в txt

gistfile1.txt

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

namespace ConsoleApplication4
{
    public class Word
    {
        public int Count { get; set; }
        public string WordItem { get; set; }
    }

    public static class StringExt
    {
        public static List<string> ToSplittedList(this string s)
        {
            Regex regex = new Regex(@"[0-9\n\r]");
            if (s.Length != 0)
            {
                s = regex.Replace(s, "");
                return
                    s.Replace(",", " ")
                        .Replace(".", " ")
                        .Replace("!", " ")
                        .Replace("  ", " ")
                        .ToLower()
                        .Split(' ')
                        .ToList();
            }
            return null;
        }
    }

    public static class FileUtils
    {
        public static string LoadData(string name)
        {
            string data;
            try
            {
                data = File.ReadAllText(name);
            }
            catch (Exception)
            {
                throw new Exception("Не удалось загрузить файл. Файл существует?");
            }
            return data;
        }

        internal static object LoadData(string v, Encoding encoding)
        {
            throw new NotImplementedException();
        }
    }





    class Program
    {
        private static List<Word> _list = new List<Word>();

        private static void Main(string[] args)
        {
            var textData = FileUtils.LoadData(@"D:\Soulstorm\WarAndPeace.txt");
            var wordListItems = textData.ToSplittedList();

            foreach (var wordListItem in wordListItems)
            {
                if (_list.Any(word => word.WordItem == wordListItem))
                {
                    _list.Single(word => word.WordItem == wordListItem).Count++;
                }
                else
                {
                    _list.Add(new Word()
                    {
                        Count = 1,
                        WordItem = wordListItem
                    });
                }
            }
            Console.WriteLine("Топ 50 слов текста");
            var words = _list.OrderByDescending(word => word.Count).ToList();
            for (int i = 0; i <= 50; i++)
            {
                Console.WriteLine(string.Format("{0} - встречается {1} раз", words[i].WordItem, words[i].Count));
            }
        }
    }
}