public SqlSession(IConfigReader rd)
 {
     Console.WriteLine("===");
     Console.WriteLine("create session and open connection");
     Connection = new SqlConnection(rd.GetConnectionString());
     Connection.Open();
 }
        protected DBAccess(IConfigReader configReader, bool openConnection)
        {
            _config = configReader;

            string ConnectionString = _config.GetConnectionString(_connectionStringKey);

            _connection = new SqlConnection(ConnectionString);

            if (openConnection)
            {
                _connection.Open();
            }
        }