public void AddToCart(Book book, int qty)
{
// Get the matching cart and book instances
var cartItem = dbc.Carts.SingleOrDefault(
c => c.CartId == ShoppingCartId &&
c.BookId == book.BookId);
if (cartItem == null)
{
// Create a new cart item if no cart item exists
cartItem = new Cart
{
BookId = book.BookId,
CartId = ShoppingCartId,
Count = qty,
DateCreated = DateTime.Now
};
dbc.Carts.Add(cartItem);
}
else
{
// If the item does exist in the cart,
// then add one to the quantity
cartItem.Count += qty;
}
// Save changes
dbc.SaveChanges();
}
