public void Update(ShoppingCart shoppingCart)
{
if(shoppingCart == null) throw new ArgumentNullException("shoppingCart");
using(var context = new MyShopReadModelDataContext())
{
context.ShoppingCarts.Attach(shoppingCart, true);
context.SubmitChanges();
}
}
partial void UpdateShoppingCart(ShoppingCart instance);
partial void DeleteShoppingCart(ShoppingCart instance);
partial void InsertShoppingCart(ShoppingCart instance);