public void MemberLogin()
        {
            Console.Clear();
            Console.Write("==========Member Login==========\n" +
                          "Username: "******"Password: ");
            string password = Console.ReadLine();

            try
            {
                Member member = memberCollection.MemberLogin(userName, password);
                MemberMainMenu(member);
            }
            catch (Exception e)
            {
                ErrorView.Error(e);
            }
        }