public class Cart
{
public int CartID { get; set; }
private List lineCollection = new List();
public void AddItem(Product product, int quantity)
{
CartLine line = lineCollection
.Where(p => p.Product.ProductID == product.ProductID)
.FirstOrDefault();
if (line == null)
{
lineCollection.Add(new CartLine
{
Product = product,
Quantity = quantity
});
}
else
{
line.Quantity += quantity;
}
}
public void RemoveLine(Product product)
{
lineCollection.RemoveAll(l => l.Product.ProductID ==
product.ProductID);
}
public decimal ComputeTotalValue()
{
return lineCollection.Sum(e => e.Product.Price * e.Quantity);
}
public void Clear()
{
lineCollection.Clear();
}
public IEnumerable Lines
{
get { return lineCollection; }
}
}
public class CartLine
{
public Product Product { get; set; }
public int Quantity { get; set; }
public DateTime Date { get; set; }
}
在点击结算按钮时，将Cart类中的Lines里的数据（即购物车里面的数据）存入数据库，这怎么去完成？
