Список файлов из папки С#

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

namespace WithDirectories1
{
class Program
{
static void Main(string[] args)
{
Console.Write("Путь к папке: ");
string dirPath = @Console.ReadLine();
if (Directory.Exists(dirPath))
{
DirectoryInfo directoryinfo = new DirectoryInfo(dirPath);
FileInfo[] fileinfo = directoryinfo.GetFiles("*.*");
StreamWriter writer = new StreamWriter("dirFiles.txt");
writer.Flush();
foreach (FileInfo thisfileinfo in fileinfo)
writer.WriteLine(thisfileinfo.FullName);
writer.Close();
Console.WriteLine("Нажмите Enter для выхода. ");
}
else Console.WriteLine("Директория не существует. ");
Console.ReadLine();
}
}
}