public int CompareTo(object obj)
{
if (obj is Item objectToCompare)
{
int creationDateComparison = CreationDate.CompareTo(objectToCompare.CreationDate);
if (creationDateComparison == 0)
{
return(Id.CompareTo(objectToCompare.Id));
}
else
{
return(creationDateComparison);
}
}
else
{
throw new ArgumentException($"An {nameof(Item)} cannot be compared with a {obj?.GetType().FullName ?? null}.");
}
}