Basic File Renaming App

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

namespace FebTwoTwo
{
    class Program
    {
        static void Main(string[] args)
        {
            //set path, get files and order by file creation time
            string rootPath = @"C:\temp";
            DirectoryInfo info = new DirectoryInfo(rootPath);
            FileInfo[] files = info.GetFiles().OrderBy(p => p.CreationTime).ToArray();

            //Change file names
            int counter = 1;
            foreach (FileInfo file in files)
            {
                string formatName = "My Files";
                string name = file.Name;
                string extension = file.Extension;
                string fullName = file.FullName;

                File.Move(file.FullName, file.FullName.Replace(file.Name, formatName + counter.ToString() + file.Extension));
                counter++;

                //File.Move takes the path of the original file (file.FullName) and moves it to the destination path (File.FullName.Replace)
                //Replace takes the old string (original path) and replaces it with a new path
                //Example it changes C:\temp\picture.jpeg to C:\temp\MyFile1.jpeg
            }
            Console.WriteLine("Files Renamed");
            Console.Read();
        }
    }
}