public override string ToString()
{
var format = "dd/MM/yyyy hh:mm";
return($"{Subject} at {Start.ToString(format)} to {End.ToString(format)} on days {ReservationDays.Select(x => x + " ")}");
}
public override string ToString()
{
return($"{Subject} at {Start} to {End} on days {string.Join(", ", ReservationDays.GetDays().ToList())}");
}
