System.Data.SQLite.SQLiteCommand.ExecuteReader C# (CSharp) Méthode

        public SQLiteDataReader ExecuteReader()
        {
            return new SQLiteDataReader (__command.ExecuteReader ());
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="certo">Quantidade respostas certas</param>
        /// <param name="errado">Quantidade respostas erradas</param>
        public string mostraComRespostas(int certo, int errado)
        {
            string Label  = "";
            int    pontos = 0;

            using (System.Data.SQLite.SQLiteCommand com = new System.Data.SQLite.SQLiteCommand(conexao))
            {
                conexao.Open();

                com.CommandText = "Select Score FROM GameResults WHERE ID =" + idPlayer.ToString();
                using (System.Data.SQLite.SQLiteDataReader reader = com.ExecuteReader())
                    while (reader.Read())
                    {
                        pontos = Convert.ToInt32(reader["Score"].ToString());
                    }
                int update = certo - errado;
                update = pontos + update < 0 ? 0 : update;


                com.CommandText = "UPDATE GameResults SET Score=Score+" + update + " WHERE ID=" + idPlayer.ToString();
                com.ExecuteNonQuery();

                com.CommandText = "Select PlayerName, Score FROM GameResults WHERE ID =" + idPlayer.ToString();
                using (System.Data.SQLite.SQLiteDataReader reader = com.ExecuteReader())
                    while (reader.Read())
                    {
                        Label = reader["PlayerName"].ToString() + " - " + reader["Score"].ToString();
                    }

                conexao.Close();        // Close the connection to the database
            }
            return(Label);
        }