using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Net;
using System.Text;
using System.IO;

namespace ConsoleApp1
{
    class Program
    {
        public static void Main(string[] args)
        {
            var cookieContainer = new CookieContainer();

            var request = (HttpWebRequest)HttpWebRequest.Create("https://filelist.ro/takelogin.php?");
            request.CookieContainer = cookieContainer;
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
            request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";

            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";

            var data = string.Format("username={0}&password={1}", "lorand98", "kocsis26021998");
            var bytes = Encoding.UTF8.GetBytes(data);

            request.ContentLength = bytes.Length;

            using (var dataStream = request.GetRequestStream())
            {
                dataStream.Write(bytes, 0, bytes.Length);
                dataStream.Close();
            }

            using (var response = request.GetResponse())
            {
                using (var sr = new StreamReader(response.GetResponseStream()))
                {
                    File.WriteAllText(@"C:\test\login.txt", sr.ReadToEnd());
                }
            }

            request = (HttpWebRequest)HttpWebRequest.Create("https://filelist.ro/browse.php");
            request.CookieContainer = cookieContainer;
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
            request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";

            using (var response = request.GetResponse())
            {
                using (var sr = new StreamReader(response.GetResponseStream()))
                {
                    File.WriteAllText(@"C:\test\browser.txt", sr.ReadToEnd());
                }
            }

        }
    }
}