尝试将.txt文件转换为单词字典。我哪里错了？(C#)

using System;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string filePath = "path/to/your/file.txt";
        Dictionary<string, int> wordDictionary = new Dictionary<string, int>();

        try
        {
            string fileContent = File.ReadAllText(filePath);
            string[] words = Regex.Split(fileContent, @"\W+");

            foreach (string word in words)
            {
                if (!string.IsNullOrEmpty(word))
                {
                    if (wordDictionary.ContainsKey(word))
                    {
                        wordDictionary[word]++;
                    }
                    else
                    {
                        wordDictionary[word] = 1;
                    }
                }
            }

            foreach (KeyValuePair<string, int> entry in wordDictionary)
            {
                Console.WriteLine($"{entry.Key}: {entry.Value}");
            }
        }
        catch (Exception e)
        {
            Console.WriteLine($"An error occurred: {e.Message}");
        }
    }
}