ConsecutiveStations IDAL.ReturnConsecutiveStation(int stationNumber1, int stationNumber2)
{
ConsecutiveStations item = null;
if (DataSource.ConsecutiveStations.Exists(consecutiveStations1 => consecutiveStations1.StationNumber1 == stationNumber1 && consecutiveStations1.StationNumber2 == stationNumber2))
{
item = DataSource.ConsecutiveStations.Find(consecutiveStations1 => consecutiveStations1.StationNumber1 == stationNumber1 && consecutiveStations1.StationNumber2 == stationNumber2);
}
return(item.Clone() ?? throw new ExceptionConsecutiveStations(stationNumber1, stationNumber2, "There are no two such stations on the list!!!"));;
}
void IDAL.AddConsecutiveStations(ConsecutiveStations consecutiveStations)
{
if (DataSource.ConsecutiveStations.Exists(consecutiveStations1 => consecutiveStations1.StationNumber1 == consecutiveStations.StationNumber1 && consecutiveStations1.StationNumber2 == consecutiveStations.StationNumber2))
{
throw new ExceptionConsecutiveStations(consecutiveStations.StationNumber1, consecutiveStations.StationNumber2, "There are already two such stations on the list!!!");
}
else
{
DataSource.ConsecutiveStations.Add(consecutiveStations.Clone());
}
}
void IDAL.UpdatingConsecutiveStations(ConsecutiveStations consecutiveStations)
{
int index = DataSource.ConsecutiveStations.FindIndex(consecutiveStations1 => consecutiveStations1.StationNumber1 == consecutiveStations.StationNumber1 && consecutiveStations1.StationNumber2 == consecutiveStations.StationNumber2);
DataSource.ConsecutiveStations[index] = index == -1 ? throw new ExceptionConsecutiveStations(consecutiveStations.StationNumber1, consecutiveStations.StationNumber2, "The consecutiveStations not exist in the compny!!!") : consecutiveStations.Clone();
}
