using System;

using System.IO;

using System.Text;

​

namespace Rextester

{

    public class Program

    {

        public static void Main(string[] args)

        {

            var path = Directory.GetCurrentDirectory();

            var fileNames = new string[]{"test1.txt", "test2.txt", "test3.txt"};

            //Создаем файлы

            foreach(string fileName in fileNames)

            {

                using (FileStream fs = File.Create(path + "\\" + fileName))     

                {                         

                    Byte[] title = new UTF8Encoding(true).GetBytes("New Text File");    

                    fs.Write(title, 0, title.Length);  

                }    

            }

            //Получаем список файлов

            var files = Directory.GetFiles(path);

            foreach(string file in files)

            {

                Console.WriteLine(file);

            }

        }

    }

}