[c#] List all files and directories in a directory + subdirectories

With this you can just run them and chosse the sub folder when console run

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using data.Patcher; // The patcher XML
namespace PatchBuilder
{
class Program
{
    static void Main(string[] args)
    {
        string patchDir;
        if (args.Length == 0)
        {
            Console.WriteLine("Give the patch directory in argument");
            patchDir = Console.ReadLine();
        }
        else
        {
            patchDir = args[0];
        }

        if (File.Exists(Path.Combine(patchDir, "patch.xml")))
            File.Delete(Path.Combine(patchDir, "patch.xml"));

        var files = Directory.EnumerateFiles(patchDir, "*", SearchOption.AllDirectories).OrderBy(p => p).ToList();

        foreach (var file in files.Where(file => file.StartsWith("patch\\Resources")).ToArray())
        {
            files.Remove(file);
            files.Add(file);
        }

        var tasks = new List<MetaFileEntry>();
        using (var md5Hasher = MD5.Create())
        {
            for (int i = 0; i < files.Count; i++)
            {
                var file = files[i];

                if ((File.GetAttributes(file) & FileAttributes.Hidden) != 0)
                    continue;

                var content = File.ReadAllBytes(file);
                var md5Hasher2 = MD5.Create();

                var task =
                    new MetaFileEntry
                    {
                        LocalURL = GetRelativePath(file, patchDir + "\\"),
                        RelativeURL = GetRelativePath(file, patchDir + "\\"),
                        FileMD5 = Convert.ToBase64String(md5Hasher2.ComputeHash(content)),
                        FileSize = content.Length,
                    };

                md5Hasher2.Dispose();

                var pathBytes = Encoding.UTF8.GetBytes(task.LocalURL.ToLower());
                md5Hasher.TransformBlock(pathBytes, 0, pathBytes.Length, pathBytes, 0);
                if (i == files.Count - 1)
                    md5Hasher.TransformFinalBlock(content, 0, content.Length);
                else
                    md5Hasher.TransformBlock(content, 0, content.Length, content, 0);

                tasks.Add(task);
                Console.WriteLine(@"Add " + task.RelativeURL);
            }

            var patch = new MetaFile
            {
                Tasks = tasks.ToArray(),
                FolderChecksum = BitConverter.ToString(md5Hasher.Hash).Replace("-", "").ToLower(),
            };


            //XmlUtils.Serialize(Path.Combine(patchDir, "patch.xml"), patch);
            Console.WriteLine(@"Created Patch in {0} !", Path.Combine(patchDir, "patch.xml"));
        }

        Console.Read();
    }

    static string GetRelativePath(string fullPath, string relativeTo)
    {
        var foldersSplitted = fullPath.Split(new[] { relativeTo.Replace("/", "\\").Replace("\\\\", "\\") }, StringSplitOptions.RemoveEmptyEntries); // cut the source path and the "rest" of the path

        return foldersSplitted.Length > 0 ? foldersSplitted.Last() : ""; // return the "rest"
    }
}
}

and this the patchar for XML export

using System.Xml.Serialization;

namespace data.Patcher
{
    public class MetaFile
    {

        [XmlArray("Tasks")]
        public MetaFileEntry[] Tasks
        {
            get;
            set;
        }

        [XmlAttribute("checksum")]
        public string FolderChecksum
        {
            get;
            set;
        }
    }
}

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