OracleConnection myConnection = new OracleConnection(@"Data Source=orcl;User ID=shibei;Password=nsic;Unicode=True");//创建连接对象
            myConnection.Open();      //建立连接

            OracleCommand myCommand = myConnection.CreateCommand(); //创建命令对象
            myCommand.CommandText = "select * from N_AIT";          //提供SQL命令
            OracleDataReader myReader = myCommand.ExecuteReader();  //执行命令返回结果指派给DataReader对象

            while (myReader.Read())                                 //从读取器中获取结果
            {
                Console.WriteLine("{0}\t{1}", myReader["ID"], myReader["NAME"]);
            }
            myReader.Close();//关闭DataReader
            myConnection.Close();//关闭数据库连接

------解决方案--------------------

Console.WriteLine("{0}\t{1}", myReader["ID"], myReader["NAME"]);
{0}对应myReader["ID"]
{1}myReader["NAME"]
同类的有string.format（“select * from table where a={0}，b={1}”a，b）；