Find Different and Same Files of Two Folders Dot Net (.NET)

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

namespace FileManipulation
{
    internal class FolderCompare
    {
        private static readonly string folderOne = "D:\\Folder1";
        private static readonly string folderTwo = "D:\\Folder2";

        /// <summary>
        /// Compares two folder files and shows which files are same
        /// and which files are not.
        /// Doesn't compare content but file names.
        /// </summary>
        internal void Compare()
        {
            string[] folderOneFiles = Directory.GetFiles(folderOne,"*.*",SearchOption.AllDirectories);
            var folderOneFileNames = folderOneFiles.Select(file => new FileInfo(file).Name);

            string[] folderTwoFiles = Directory.GetFiles(folderTwo, "*.*", SearchOption.AllDirectories);
            var folderTwoFileNames = folderTwoFiles.Select(file => new FileInfo(file).Name);

            HashSet<string> listOfFilesSame = new HashSet<string>();
            HashSet<string> listOfFilesNotSameOfOne = new HashSet<string>();
            HashSet<string> listOfFilesNotSameOfTwo = new HashSet<string>();

            // add folder one files to 'listOfFilesSame'
            // and intersect with 'folderTwoFileNames'
            listOfFilesSame.UnionWith(folderOneFileNames);
            listOfFilesSame.IntersectWith(folderTwoFileNames);

            // add folder one files and intersect with 'listOfFilesSame'
            listOfFilesNotSameOfOne.UnionWith(folderOneFileNames);
            listOfFilesNotSameOfOne.ExceptWith(listOfFilesSame);

            // add folder two files and intersect with 'listOfFilesSame'
            listOfFilesNotSameOfTwo.UnionWith(folderTwoFileNames);
            listOfFilesNotSameOfTwo.ExceptWith(listOfFilesSame);


            // show the lists

            // show the list of same in both
            Console.WriteLine("\n\nBelow is the list of same files");
            int count = 1;
            foreach (string name in listOfFilesSame)
            {
                Console.WriteLine("{0}. {1}", count, name);
                count++;
            }

            // show the list of different files in folder one
            Console.WriteLine("\n\nBelow is the list of different files in folder one");
            count = 1;
            foreach (string name in listOfFilesNotSameOfOne)
            {
                Console.WriteLine("{0}. {1}", count, name);
                count++;
            }

            // show the list of different files in folder two
            Console.WriteLine("\n\nBelow is the list of different files in folder two");
            count = 1;
            foreach (string name in listOfFilesNotSameOfTwo)
            {
                Console.WriteLine("{0}. {1}", count, name);
                count++;
            }
        }
    }
}