//Allows the user to view the HighscoreForm
        private void btnScores_Click(object sender, EventArgs e)
        {
            this.Hide();    //Hides the MenuForm as it is the MainForm for the application
            HighscoreForm highscoreForm = new HighscoreForm();

            highscoreForm.Show();
        }
        //Manages the end of the game by updating players' scores and saving them to file
        private void endOfGame()
        {
            if (player1.Score == player2.Score)
            {
                MessageBox.Show("It's a draw!", "All Pairs Found");
            }
            else if (player1.Score > player2.Score)
            {
                MessageBox.Show(player1.Username + " wins!", "All Pairs Found");
            }
            else
            {
                MessageBox.Show(player2.Username + " wins!", "All Pairs Found");
            }

            //Update the players' scores
            if (btnCards.Count() == 18) //i.e. if playing in easy mode
            {
                player1.ScoresEasy.Add(player1.Score);
                player1.Score = 0;
                if (player2.Username != "CPU")   //skips player 2 if in 1 player mode
                {
                    player2.ScoresEasy.Add(player2.Score);
                    player2.Score = 0;
                }
            }
            else    //i.e. if playing in hard mode
            {
                player1.ScoresHard.Add(player1.Score);
                player1.Score = 0;
                if (player2.Username != "CPU")  //skips player 2 if in 1 player mode
                {
                    player2.ScoresHard.Add(player2.Score);
                    player2.Score = 0;
                }
            }

            //saves the players' scores to file
            if (!Player.UpdatePlayer(player1))   //if player not found then append to file
            {
                Player.AppendNewPlayer(player1);
            }
            if (player2.Username != "CPU")         //skips player 2 if in 1 player mode
            {
                if (!Player.UpdatePlayer(player2)) //if player not found then append to file
                {
                    Player.AppendNewPlayer(player2);
                }
            }

            //Closes the GameForm and opens the HighscoreForm to show the top scores
            this.Close();
            HighscoreForm highscoreForm = new HighscoreForm();

            highscoreForm.Show();
        }