//public void AddLine(Album album, int quantity)
//{
// // Get the matching cart and album instances
// var line = repository.Carts.SingleOrDefault(
// c => c.CartId == this.ShoppingCartId
// && c.AlbumId == album.AlbumId);
// if (line == null)
// {
// // Create a new cart line if no cart item exists
// Cart newLine = new Cart
// {
// CartId = this.ShoppingCartId,
// AlbumId = album.AlbumId,
// Count = quantity,
// DateCreated = DateTime.Now
// };
// repository.AddLine(newLine);
// }
// else
// {
// // If the item does exist in the cart, then add one to the quantity
// repository.AddLine(line.LineId, quantity);
// }
//}
public void AddLine(int albumId, int quantity)
{
repository.AddLine(this.ShoppingCartId, albumId, quantity);
}