how to store a oracle data in an array using datareader

public static ArrayList FillArrayList(String StoredProcedure, List<sqlparameter> sqlParameters, String ConnectionName)
        {
            ArrayList list = new ArrayList();
            try
            {
                using (SqlDataReader reader = FillDataReader(StoredProcedure, sqlParameters, ConnectionName))
                {
                    if (reader.HasRows)
                    {
                        while (reader.Read())
                        {
                            Object[] listValues = new Object[reader.FieldCount];
                            reader.GetValues(listValues);
                            list.Add(listValues);
                        }
                    }
                    reader.Close();
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message, ex.InnerException);
            }

            return list;
        }</sqlparameter>