什么是Delphi MatchesMask函数的C#等价物？

using System;
using System.IO;

class Program
{
    static void Main()
    {
        string path = @"C:\Users\user\Documents\file.txt";
        string searchPattern = "*.txt";

        if (Path.GetFileName(path).MatchesMask(searchPattern))
        {
            Console.WriteLine("The file matches the search pattern.");
        }
        else
        {
            Console.WriteLine("The file does not match the search pattern.");
        }
    }
}

public static class StringExtensions
{
    public static bool MatchesMask(this string filePath, string searchPattern)
    {
        return Path.GetFileName(filePath).Like(searchPattern);
    }

    public static bool Like(this string str, string pattern)
    {
        // 实现通配符匹配的代码
    }
}

public static bool Like(this string str, string pattern)
{
    return new Regex(
        pattern
            .Replace(".", "\\.")
            .Replace("*", ".*")
            .Replace("?", ".")
    ).IsMatch(str);
}