如何在C#中获取具有特定扩展名的目录中的所有文件？

using System;
using System.IO;

class Program
{
    static void Main()
    {
        string directoryPath = @"C:\example_directory";
        string extension = ".txt";

        var files = Directory.GetFiles(directoryPath, $"*{extension}");

        foreach (var file in files)
        {
            Console.WriteLine($"File: {file}");
        }
    }
}