Names scores

Problem 22.cs

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

namespace EulerProject
{
    class Program
    {
        /// <summary>
        /// The letter scores
        /// </summary>
        private static Dictionary<char, int> letterScores;

        /// <summary>
        /// Mains the specified arguments.
        /// </summary>
        /// <param name="args">The arguments.</param>
        [STAThread]
        static void Main(string[] args)
        {
            // get the value of each letter in the alphabet
            char[] alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
            letterScores = new Dictionary<char,int>();
            for (int i = 0; i < alpha.Length; i++)
            {
                letterScores.Add(alpha[i], i+1);
            }

            // Read all names from file
            List<string> names = new List<string>();
            File.ReadAllText("names.txt").Split(',').ToList().ForEach(x => names.Add(x.Replace("\"", "")));

            // Sort alphabetically
            names.Sort(StringComparer.InvariantCultureIgnoreCase);

            // Calculate scores for each name
            int iterator = 1;
            List<long> scores = new List<long>();
            names.ForEach(x => scores.Add(calculateScore(x) * iterator++));

            // Sum every name's score
            long scoreSum = 0;
            scores.ToList().ForEach(x => scoreSum += x);

            // Show the result
            Console.WriteLine(scoreSum);
            System.Windows.Forms.Clipboard.SetText(scoreSum.ToString());
            Console.Read();
        }

        /// <summary>
        /// Calculates the sum of letter scores in a string
        /// </summary>
        /// <param name="name">The name.</param>
        /// <returns>The score</returns>
        private static int calculateScore(string name)
        {
            // Check the letter scores exist
            if (letterScores == null) throw new NullReferenceException("letterScores hasn't been created");

            // Calculate the score sum
            int score = 0;
            name.ToCharArray().ToList().ForEach(x => score += letterScores[x]);

            return score;
        }
    }
}