private decimal find_id_hs_lns_by_ma_muc(string ma_lns, string muc_lns)
{
try
{
decimal id_ma_lns = (from DataRow dr in m_dt_ma_lns.Rows
where (string)dr["MA_TU_DIEN"] == ma_lns
select (decimal)dr["ID"]).FirstOrDefault();
decimal id_muc_lns = (from DataRow dr in m_dt_muc_lns.Rows
where (string)dr["MA_TU_DIEN"] == muc_lns
select (decimal)dr["ID"]).FirstOrDefault();
US_DM_HE_SO_LUONG_NS v_us = new US_DM_HE_SO_LUONG_NS();
DS_DM_HE_SO_LUONG_NS v_ds = new DS_DM_HE_SO_LUONG_NS();
v_us.FillDataset(v_ds);
decimal id_lns = (from DataRow dr in v_ds.Tables[0].Rows
where (decimal)dr["ID_MA_LNS"] == id_ma_lns & (decimal)dr["ID_MUC_LNS"] == id_muc_lns
select (decimal)dr["ID"]).FirstOrDefault();
return id_lns;
}
catch(Exception v_e)
{
throw v_e;
}
}