protected void Write(string name, string surname, string login, string password)
        {
            using(StreamWriter writeInfo = new StreamWriter("mailInfo.txt", true))
            {
                writeInfo.WriteLine(login + "@yandex.ru" + " : " + password + " || " + "name: " + name + " surname: " + surname);
            }
        }

        protected string GenerateName()
        {
            return "pogoup";
        }

        protected string GenerateSurname()
        {
            return "Account";
        }

        protected string GenerateLogin()
        {
            bool readFromLoginInfo = false;

            string basis = "testpogoup";
            string addPart = "";

            using(StreamReader sr = new StreamReader("loginInfo.txt"))
            {
                addPart = sr.ReadLine();

                readFromLoginInfo = true;
            }

            if(readFromLoginInfo)
            {
                using(StreamWriter sw = new StreamWriter("loginInfo.txt", false))
                {
                    int num = int.Parse(addPart) + 1;
                    sw.WriteLine(num);
                }
            }

            return String.Concat(basis, addPart);
        }

        protected string GeneratePassword(string login)
        {
            string numbers = "1234567890";
            string smallCase = "qwertyuiopasdfghjklzxcvbnm";
            string upperCase = "QWERTYUIOPASDFGHJKLZXCVBNM";

            string pass = "";
            Random rnd = new Random();

            for(int i = 0; i < 3; i++)
            {
                char num = numbers[rnd.Next(0, numbers.Length-1)];
                pass += num;
            }

            for(int i = 0; i < 10; i++)
            {
                char num;

                if(i % 3 == 0)
                {
                    num = upperCase[rnd.Next(0, upperCase.Length - 1)];
                }
                else
                {
                    num = smallCase[rnd.Next(0, smallCase.Length - 1)];
                }
                pass += num;
            }

            return pass;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string name = GenerateName();
            string surname = GenerateSurname();
            string login = GenerateLogin();
            string password = GeneratePassword(login);

            webBrowser1.Document.GetElementById("firstname").SetAttribute("value", name);
            webBrowser1.Document.GetElementById("lastname").SetAttribute("value", surname);
            webBrowser1.Document.GetElementById("login").SetAttribute("value", login);
            webBrowser1.Document.GetElementById("password").SetAttribute("value", password);
            webBrowser1.Document.GetElementById("password_confirm").SetAttribute("value", password);



            Write(name, surname, login, password);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            webBrowser1.Navigate("https://passport.yandex.ru/registration/mail");
        }