I made this class to sync files between two directories (C# .Net 3.5)

using

 System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

 

namespace DeployUtil

{

    public class CopyUtil

    {

        public static void Sync(string sourcePath, string destinationPath)

        {

            bool dirExisted = DirExists(destinationPath);

 

            //get the source files

            string[] srcFiles = Directory.GetFiles(sourcePath);

 

            foreach (string sourceFile in srcFiles)

            {

                FileInfo sourceInfo = new FileInfo(sourceFile);

                string destFile = Path.Combine(destinationPath, sourceInfo.Name);

 

                if (!dirExisted && File.Exists(destFile))

                {

                    FileInfo destInfo = new FileInfo(destFile);

                    if (sourceInfo.LastWriteTime > destInfo.LastWriteTime)

                    {

                        //file is newer, so copy it

                        File.Copy(sourceFile, Path.Combine(destinationPath, sourceInfo.Name), true);

                        Console.WriteLine(sourceFile + " copied (newer version)");

                    }

                }

                else

                {

                    File.Copy(sourceFile, Path.Combine(destinationPath, sourceInfo.Name));

                    Console.WriteLine(sourceFile + " copied");

                }

            }

 

            DeleteOldDestinationFiles(srcFiles, destinationPath);

 

            //now process the directories if exist

            string[] dirs = Directory.GetDirectories(sourcePath);

 

            foreach (string dir in dirs)

            {

                DirectoryInfo dirInfo = new DirectoryInfo(dir);

 

                //recursive do the directories

                Sync(dir, Path.Combine(destinationPath, dirInfo.Name));

            }

        }

 

        private static bool DirExists(string path)

        {

            //create destination directory if not exist

            if (!Directory.Exists(path))

            {

                Directory.CreateDirectory(path);

                return true;

            }

            else

            {

                return false;

            }

        }

 

        private static void DeleteOldDestinationFiles(string[] sourceFiles, string destinationPath)

        {

            //get the destination files

            string[] dstFiles = Directory.GetFiles(destinationPath);

 

            foreach (string dstFile in dstFiles)

            {

                FileInfo f = new FileInfo(dstFile);

 

                string[] found = Array.FindAll(sourceFiles, str => GetName(str).Equals(f.Name));

                if (found.Length == 0)

                {

                    //delete file if not found in destination

                    File.Delete(dstFile);

                    LogInfo(dstFile + " deleted");

                }

            }

        }

 

        private static string GetName(string path)

        {

            FileInfo i = new FileInfo(path);

            return i.Name;

        }

 

        private static void LogInfo(string text)

        {

            ConsoleColor was = Console.ForegroundColor;

            Console.ForegroundColor = ConsoleColor.Magenta;

            Console.WriteLine(text);

            Console.ForegroundColor = was;

        }

 

    }

}