public void UsePass(List <User> User)
        {
            // Users user = new Users();

            Console.WriteLine("Username: "******"Password: "******"Not valid username");
            }
            else if (UserMatchOk)
            {
                Console.WriteLine(Username);
                Console.Write("Password: "******"The password is wrong ");
                }
                else if (PassMatchOk)
                {
                    Console.WriteLine("The password is right ");
                    //TODO: kane klasi logger  gia logging sto db
                    //TODO:  loggare tin torini ora kai to username
                    //TODO: ftiakse tin klasi UserFirstSCreen4
                }
            }
        }
        public void GotoLoginScreen()
        {
            Console.Write("Username:"******" username is " + usermatch);


            if (!usermatch)
            {
                Console.WriteLine("Not valid username");
            }
            else if (usermatch)
            {
                Console.WriteLine(user);
                Console.Write("Password: "******"password is " + passmatch);

                if (!passmatch)                                  //lathos kodikos
                {
                    Console.WriteLine("The password is wrong "); //TODO: asterakia sto pass
                }
                else if (passmatch)                              //sostos kodikos
                {
                    Console.WriteLine("The password is right ");

                    // loggaro tin torini ora kai to username
                    LoggerManager log = new LoggerManager();

                    log.LogUser(user);


                    //List<User> users = new List<User>();
                    UserManager userManager = new UserManager();
                    //users= userManager.GetAllUsers();
                    int AccesLvL = userManager.CheckLvLOffAccess(user);
                    //kai na kaleso tin parakato klasi edo

                    if (AccesLvL == 0)//simple user
                    {
                        UserFirstScreen s = new UserFirstScreen();
                        s.PrintFirstScreen();
                    }
                    else if (AccesLvL == 1)
                    {
                        UserWithAccessLvL1.PrintAdminLvL1FirstScreen();
                    }
                    else if (AccesLvL == 2)
                    {
                        UserWithAccessLvL2.PrintAdminLvL2FirstScreen();
                    }
                    else if (AccesLvL == 3)
                    {
                        UserWithAccessLvL3.PrintAdminLvL3FirstScreen();
                    }
                    else if (AccesLvL == 4)//Admin
                    {
                        AdminScreen.PrintAdminFirstScreen();
                    }
                }
            }
        }