#region добавить фин параметр позиции с суммой
			public DataRow Add(int idfinparam, double smbase, double sm, int idorderitem){
				int i = 0;
				try {
					//ищем такой параметр у позиции
					DataRow [] drs = table_finparamcalc.Select(	"idfinparam = " + idfinparam.ToString() +
						" and idorderitem = " + idorderitem.ToString() + " and deleted is null");
					DataRow dr;
					if (drs.Length == 0){	// если не находим, то добавляем
						drs = table_orderitem.Select("idorderitem = " + idorderitem.ToString());
						dr = Add(idfinparam);
						dr["idorderitem"] = idorderitem;
						if (drs.Length != 0)
							dr["orderitem_numpos"] = drs[0]["numpos"];
					} else 				// иначе - обновляем
						dr = drs[0];
					dr["smbase"] = smbase;	
					dr["sm"] = sm;
					return dr;
				}catch (Exception e) {
					MessageBox.Show ("Добавление фин.параметра с суммой - " + i.ToString() + e.Message);
					return null;
				}
			}
			public DataRow Add(int idfinparam, double smbase, double sm, double smbase2, double smbase3, double smbase4, int idorderitem){
				int i = 0;
				try {
					//ищем такой параметр у модели
					DataRow [] drs = table_finparamcalc.Select(	"idfinparam = " + idfinparam.ToString() +
						" and idorderitem = " + idorderitem.ToString() + " and deleted is null");
					DataRow dr;
					if (drs.Length == 0){	// если не находим, то добавляем
						drs = table_orderitem.Select("idorderitem = " + idorderitem.ToString());
						dr = Add(idfinparam);
						dr["idorderitem"] = idorderitem;
						if (drs.Length != 0)
							dr["orderitem_numpos"] = drs[0]["numpos"];
					} else 				// иначе - обновляем
						dr = drs[0];
					dr["smbase"] = smbase;	
					dr["sm"] = sm;
					dr["smbase2"] = smbase2;	
					dr["smbase3"] = smbase3;	
					dr["smbase4"] = smbase4;	
					return dr;
				}catch (Exception e) {
					MessageBox.Show ("Добавление фин.параметра с суммой - " + i.ToString() + e.Message);
					return null;
				}
			}
			#endregion