protected override void BeforeUpdate()
{
    base.BeforeUpdate();
    LibMessageList libMessageList = new LibMessageList();
    #region 檢查B表
    foreach (DataRow dataRowB in base.Tables[1].Rows)
    {
        if (dataRowB.RowState != DataRowState.Deleted)
        {
            if (LibSysUtils.ToByte(dataRowB["ReservedKind"]) > 0)
            {
                if (LibSysUtils.ToDecimal(dataRowB["ReservedMoney"]) > LibSysUtils.ToDecimal(dataRowB["OrderMoney"]))
                {
                    string errMessage = string.Format("序號{0}:[申請保留金額]：不允許大於[未結案請（採）購金額]!", dataRowB["RowNo"]);
                    LibMessageInfo libMessageInfo = new LibMessageInfo(LibMessageKind.Error, errMessage, "201587", string.Empty);
                    libMessageList.Add(libMessageInfo);
                }
            }
            if (LibSysUtils.ToDecimal(dataRowB["ReservedMoney"]) != LibSysUtils.ToDecimal(dataRowB["PeriodDetailTotal"]))
            {
                string errMessage = string.Format("序號{0}:[申請保留金額]需等於[分期明細加總金額]!", dataRowB["RowNo"]);
                LibMessageInfo libMessageInfo = new LibMessageInfo(LibMessageKind.Error, errMessage, "201587", string.Empty);
                libMessageList.Add(libMessageInfo);
            }
            if (LibSysUtils.ToDecimal(dataRowB["ReservedMoney"]) != LibSysUtils.ToDecimal(dataRowB["TransInYearTotal"]))
            {
                string errMessage = string.Format("序號{0}:[申請保留金額]需等於[保留轉入年度明細加總金額]!", dataRowB["RowNo"]);
                LibMessageInfo libMessageInfo = new LibMessageInfo(LibMessageKind.Error, errMessage, "201587", string.Empty);
                libMessageList.Add(libMessageInfo);
            }
        }
    }
    #endregion 檢查B表
    if (libMessageList.Count> 0)
    {
        LibMessageException.Throw(libMessageList);
    }
}