/// <summary>
/// 执行ＳＱＬ语句或者存储过程 ,返回参数object．第一行，第一列的值
/// </summary>
/// <param name="trans">语句所在的事务</param>
/// <param name="commandText">ＳＱＬ语句或者存储过程名</param>
/// <param name="commandParameters">ＳＱＬ语句或者存储过程参数</param>
/// <param name="commandType">ＳＱＬ语句类型</param>
/// <param name="commandTimeout">超时时间</param>
/// <returns>执行结果集第一行，第一列的值</returns>
public object ExecuteScalar(IDbTransaction trans, string commandText, List <IDataParameter> commandParameters = null, CommandType commandType = CommandType.Text, int?commandTimeout = null)
{
return(SQLHelper.ExecuteScalar(trans, commandText, commandParameters, commandType, commandTimeout));
}
/// <summary>
/// 执行ＳＱＬ语句或者存储过程 ,返回参数object．第一行，第一列的值
/// </summary>
/// <param name="conn">要执行ＳＱＬ语句的连接</param>
/// <param name="commandText">ＳＱＬ语句或者存储过程名</param>
/// <param name="commandParameters">ＳＱＬ语句或者存储过程参数</param>
/// <param name="commandType">ＳＱＬ语句类型</param>
/// <param name="commandTimeout">超时时间</param>
/// <returns>执行结果集第一行，第一列的值</returns>
public object ExecuteScalar(IDbConnection conn, string commandText, List <IDataParameter> commandParameters = null, CommandType commandType = CommandType.Text, int?commandTimeout = null)
{
return(SQLHelper.ExecuteScalar((MySqlConnection)conn, commandText, commandParameters, commandType, commandTimeout));
}
