.NET 4.x Подскажите с кодом по zip (новичек) - C#

using System;
using System.Text;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Net;

namespace ConsoleApplication2
{
 
    class Program
    {
        private string Directory_game = "";
        private string file_exist = "";
        private string archive = "";
        ZipFile zip;
        DirectoryInfo dir;
        FileInfo[] files;
        WebClient client = new WebClient();
        WebClient webClient;
        Stopwatch sw = new Stopwatch();
        private static int i = 0;
        StringBuilder sb;
 
        static void Main(string[] args)
        {
            string md5s = "";
            StringBuilder sb;
            string Directory_game = "";
            //получаем правильнгую папку
            if (Environment.CurrentDirectory[Environment.CurrentDirectory.Length - 1] == '\\')
            {
                Directory_game = Environment.CurrentDirectory;
 
            }
            else
            {
                Directory_game = Environment.CurrentDirectory + '\\';
            }
            Console.WriteLine(Directory_game + " <-- папка запуска");
            string file_dir = Directory_game;
            //получаем список файлов и грузим их
            WebClient client = new WebClient();
            WebClient Client;
            Stream stream = client.OpenRead(@"http://mysite.ru/file/test" + ".ini");
            StreamReader sr = new StreamReader(stream);
            string newLine;
            while ((newLine = sr.ReadLine()) != null) {
                Console.WriteLine(" считывается файлик --> " + newLine);
                string file_exist;
                file_exist = newLine;
                if (File.Exists(Directory_game + file_exist))
                {
                    try
                    {
                        WebClient webClient = new WebClient();
                        string slesh = file_exist.Replace(@"", "/");
                        using (webClient = new WebClient())
                        {
                            Uri URL = new Uri("ftp://admin:removed@mail.ru/mods/" + slesh + ".zip");
                            webClient.DownloadFile(URL, file_dir + file_exist + ".zip");
                            while (webClient.IsBusy) { }
                            string fullPath = Path.GetDirectoryName(file_dir + file_exist + ".zip");
                                          try
                                          {
                                              string path = "";
                                              archive = file_dir + file_exist + ".zip";
                                              path = fullPath;
                                              using (zip = new ZipFile(archive, Encoding.UTF32))
                                              {
                                                  zip.TempFileFolder = Path.GetTempPath();
                                                  zip.ExtractAll(path, ExtractExistingFileAction.OverwriteSilently);
                                                  zip = null;
 
                                              }
                                              path = null;
                                          }
                                          catch { } 
                            try
                        {
                                          File.Delete(file_dir + file_exist + ".zip");
                                      }
                                      catch {Console.WriteLine("Файл не удален: " + file_dir + file_exist + ".zip"); }
                                  } 
                            Console.WriteLine(" Выполнено успешно! ");
                        }
                    catch (Exception mess) { Console.WriteLine("Ошибка: " + mess.Message); };
                }
                    stream.Close();
            }
            Console.ReadLine();
        }
    }
}