public bool Register(string username, string password, string loginDate, string key) { try { LoginValidation lv = new LoginValidation(); DateTime date = DateTime.Parse(loginDate); lv.ParameterValidation(username, password, date, key); lv.LoginDateValidation(username, date); lv.KeyValidation(username, password, date, key); lv.Register(username, password); return(true); } catch (Exception ex) { return(false); } }