public CommentBlock FindAllProductComments(long productId, int startIndex = 0, int count = 20)
{
List <Comment> comments = CommentDao.FindByProductIdOrderByDeliveryDate(productId, startIndex, count + 1);
bool existMoreComments = (comments.Count == count + 1);
if (existMoreComments)
{
comments.RemoveAt(count);
}
return(new CommentBlock(comments, existMoreComments));
}