public void AddBook(V_Book b, int quantity)
{
CartLine line = lineCollection.Where(p => p.Book.BookID == b.BookID).FirstOrDefault();
if (line == null)
{
lineCollection.Add(new CartLine(b, quantity));
}
else
{
line.Quantity += quantity;
}
}
public void UpdateQuantity(V_Book b, int quantity)
{
CartLine line = lineCollection.Where(p => p.Book.BookID == b.BookID).FirstOrDefault();
if (line == null)
{
}
else
{
line.Quantity = quantity;
}
if (line.Quantity == 0)
{
lineCollection.Remove(line);
}
}
public CartLine(V_Book b, int quantity)
{
this.Book = b;
this.Quantity = quantity;
}