/// <summary> /// 执行数据库事务查询操作,返回结果集中位于第一行第一列的Object类型的值 /// </summary> /// <param name="transaction">一个已存在的数据库事务对象</param> /// <param name="commandType">命令类型</param> /// <param name="commandText">Oracle存储过程名称或PL/SQL命令</param> /// <param name="commandParameters">命令参数集合</param> /// <returns>当前事务查询操作返回的结果集中位于第一行第一列的Object类型的值</returns> public object ExecuteScalar(OracleTransaction transaction, CommandType commandType, string commandText, params OracleParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("当前数据库事务不存在"); OracleConnection connection = transaction.Connection; if (_connection == null) throw new ArgumentException("当前事务所在的数据库连接不存在"); OracleCommand command = new OracleCommand(); object result = null; try { PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters); result = command.ExecuteScalar(); command.Parameters.Clear(); } catch { throw; } finally { transaction.Dispose(); command.Dispose(); } return result; }
/// <summary> /// 执行数据库事务查询操作,返回受影响的行数 /// </summary> /// <param name="transaction">数据库事务对象</param> /// <param name="cmdType">Command类型</param> /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param> /// <param name="commandParameters">命令参数集合</param> /// <returns>当前事务查询操作影响的数据行数</returns> public int ExecuteNonQuery(OracleTransaction transaction, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters) { OracleCommand command = new OracleCommand(); OracleConnection connection = transaction.Connection; int result = 0; try { PrepareCommand(command, connection, transaction, cmdType, cmdText, commandParameters); result = command.ExecuteNonQuery(); command.Parameters.Clear(); } catch { throw; } finally { transaction.Dispose(); command.Dispose(); } return result; }