c# - 如何阻止 oracledatareader 读取

Question

我已经创建了一个软件来从 Oracle DB 读取数据并通过 SMS 发送它，但是当我按下键盘上的 C 键时我想停止 datareader 读取，但是当我这样做时我收到了这个异常消息:

Operation is not valid due to the current state of the object

堆栈跟踪:

at Oracle.DataAccess.Client.OracleDataReader.Read()
   at Test_SMS_AT_Command.Program.OnTimer(Object obj, EventArgs args)

这是我的代码:

   oraCommand.ExecuteNonQuery();

                OracleDataAdapter oraDataAdapter = new OracleDataAdapter(oraCommand);
                Oracle.DataAccess.Types.OracleRefCursor refCursor = (Oracle.DataAccess.Types.OracleRefCursor)oraParameter.Value;
                OracleDataReader reader = refCursor.GetDataReader();
                while (reader.Read())
                {
                    if (cki.Key == ConsoleKey.C)
                    {
                        cancel();                     

                        if (reader != null)
                        {
                            reader.Close(); //Closed
                        }

                        break;

                    }

                    if (sms.sendSms(reader["MOBILE_NO"].ToString(), reader["TEXT"].ToString()))
                    {
                        Console.WriteLine("Message successfully sent to " + reader["MOBILE_NO"].ToString() + ": " + DateTime.Now);
                        setStatus(Convert.ToInt32(reader["GORANNET_SMS_ID"]));
                        writeToFile(reader["TEXT"] + " sent to " + reader["MOBILE_NO"] + " at: " + DateTime.Now);
                    }
                    else
                    {
                        Console.WriteLine("Message was not sent");
                    }
                    System.Threading.Thread.Sleep(15000);
                }

谢谢

Answer 1

调用reader.Close();在 while 语句之后...