OracleDataReader::GetEnumerator Method ()
Returns an IEnumerator that can be used to iterate through the rows in the data reader.
Assembly: System.Data.OracleClient (in System.Data.OracleClient.dll)
Although you can use this method to retrieve an explicit enumerator, in languages that support a foreach construct, it's simpler to use the looping construct directly in order to iterate through the rows in the data reader.
Available since 2.0