在C#/F#中是否有用于恢复递归文件搜索的设计模式？

using System;
using System.IO;

public class FileSearch
{
    public static void Main(string[] args)
    {
        string directoryPath = "C:\\path\\to\\directory";
        string searchPattern = "*.txt";

        SearchFiles(directoryPath, searchPattern);
    }

    public static void SearchFiles(string directoryPath, string searchPattern)
    {
        try
        {
            foreach (string file in Directory.GetFiles(directoryPath, searchPattern))
            {
                Console.WriteLine(file);
            }

            foreach (string subDirectory in Directory.GetDirectories(directoryPath))
            {
                SearchFiles(subDirectory, searchPattern);
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("Error: " + e.Message);
        }
    }
}

open System.IO

let rec searchFiles (directoryPath: string) (searchPattern: string) =
    try
        for file in Directory.GetFiles(directoryPath, searchPattern) do
            printfn "%s" file

        for subDirectory in Directory.GetDirectories(directoryPath) do
            searchFiles subDirectory searchPattern
    with
        | ex -> printfn "Error: %s" ex.Message

let main() =
    let directoryPath = "C:\\path\\to\\directory"
    let searchPattern = "*.txt"

    searchFiles directoryPath searchPattern

main()