public int AddLot(Lot NewData, List <Tag> Tags)
{
if (NewData.Product.Company.Length < 2)
{
throw new ArgumentException("too short company name");
}
if (NewData.Product.Title.Length < 3)
{
throw new ArgumentException("too short title");
}
if (NewData.Price < 0)
{
throw new ArgumentException("price must be above 0");
}
if (NewData.DateStart > NewData.DateEnd)
{
throw new ArgumentException("Start date must be before end date");
}
if (NewData.DateStart > DateTime.Now)
{
throw new ArgumentException("auction can't be started before create");
}
return(Dal.AddLot(NewData, Tags));
}