C# Insta bot

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Net;
using System.IO;
using System.Diagnostics;
class InstagramWrapper
{
    private CookieCollection loginCookies;
    public WebProxy proxy = null;
    private void do_Login(string Username, string Password, string CSRF)
    {
        byte[] bytes = ASCIIEncoding.UTF8.GetBytes("username=" + Username + "&password=" + Password);
        HttpWebRequest postReq = (HttpWebRequest)WebRequest.Create("https://instagram.com/accounts/login/ajax/");
        WebHeaderCollection postHeaders = postReq.Headers;
        postReq.Proxy = proxy;
        postReq.Method = "POST";
        postReq.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0";
        postReq.Accept = "*/*";
        postHeaders.Add("Accept-Language", "it-IT,it;q=0.8,en-US;q=0.5,en;q=0.3");
        postHeaders.Add("Accept-Encoding", "gzip, deflate");
        postReq.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
        postHeaders.Add("X-Instagram-AJAX", "1");
        postHeaders.Add("X-CSRFToken", CSRF);
        postHeaders.Add("X-Requested-With", "XMLHttpRequest");
        postReq.Referer = "https://instagram.com/accounts/login/";
        postReq.ContentLength = bytes.Length;
        var cookies = new CookieContainer();
        cookies.Add(new Cookie("csrftoken", CSRF) { Domain = "instagram.com" });
        postReq.CookieContainer = cookies;
        postReq.KeepAlive = true;
        postHeaders.Add("Pragma", "no-cache");
        postHeaders.Add("Cache-Control", "no-cache");
        Stream postStream = postReq.GetRequestStream();
        postStream.Write(bytes, 0, bytes.Length);
        postStream.Close();
        HttpWebResponse postResponse;
        postResponse = (HttpWebResponse)postReq.GetResponse();
        loginCookies = postResponse.Cookies;
        StreamReader reader = new StreamReader(postResponse.GetResponseStream());
    }
    private void doFollow(string profilelink, string followerlink, string CSRF)
    {
        HttpWebRequest postReq = (HttpWebRequest)WebRequest.Create(followerlink);
        WebHeaderCollection postHeaders = postReq.Headers;
        postReq.Proxy = proxy;
        postReq.Method = "POST";
        postReq.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36";
        postReq.Accept = "*/*";
        postReq.Referer = profilelink;
        postHeaders.Add("Accept-Language", "en-US,en;q=0.8,ro;q=0.6,de;q=0.4,es;q=0.2,ms;q=0.2");
        postHeaders.Add("Accept-Encoding", "gzip, deflate");
        postHeaders.Add("X-Instagram-AJAX", "1");
        postHeaders.Add("X-CSRFToken", CSRF);
        postHeaders.Add("X-Requested-With", "XMLHttpRequest");
        var cookies = new CookieContainer();
        cookies.Add(loginCookies);
        cookies.Add(new Cookie("csrftoken", CSRF) { Domain = "instagram.com" });
        postReq.CookieContainer = cookies;
        postReq.KeepAlive = true;
        postHeaders.Add("Pragma", "no-cache");
        postHeaders.Add("Cache-Control", "no-cache");
        Stream postStream = postReq.GetRequestStream();
        postStream.Close();
        HttpWebResponse postResponse;
        postResponse = (HttpWebResponse)postReq.GetResponse();
        StreamReader reader = new StreamReader(postResponse.GetResponseStream());

    }
    private string getRequest(string url)
    {
        var request = (HttpWebRequest)WebRequest.Create(url);
        request.Proxy = proxy;
        using (var response = request.GetResponse())
        {
            using (var reader = new StreamReader(response.GetResponseStream()))
            {
                return reader.ReadToEnd();
            }
        }
    }
    public void Follow(string profilelink)
    {
        string request = getRequest(profilelink);
        string csrf_token = Regex.Match(request, @"(?<=""csrf_token"":"")(.*?)(?="")").Value;
        string id = Regex.Match(request, @"(?<=""id"":"")(.*?)(?="")").Value;
        doFollow(profilelink, string.Format("https://instagram.com/web/friendships/{0}/follow/", id), csrf_token);
    }
    public void Login(string username, string password)
    {
        string test = getRequest("https://instagram.com/accounts/login/");
        string csrf_token = Regex.Match(test, @"(?<=""csrf_token"":"")(.*?)(?="")").Value;
        do_Login(username, password, csrf_token);
    }
}