public void CalculatePlayerScore() { int playerScore = 0; int playerAnswersCount = this.playerAnswers.Count; for (int i = 0; i < playerAnswersCount; i++) { if (playerAnswers[i] != null) { if (playerAnswers[i] == problems[i].Answer) { switch (this.Difficulty) { case Difficulty.Easy: playerScore += 3; break; case Difficulty.Hard: playerScore += 5; break; default: break; } } else { switch (this.Difficulty) { case Difficulty.Easy: playerScore -= 1; break; case Difficulty.Hard: playerScore -= 3; break; default: break; } } } } if (timerIsRunning) { DataPersister.SavePlayerScore(playerScore); MessageBox.Show(string.Format("Your score is {0}.", playerScore)); RaiseGameFinished(); } this.timerIsRunning = false; StopTimer(); }