public void Execute()
{
using (var db = new Entities()) {
// Welche Bestellungen müssen den geändert werden?
var ordersToUpdate = db.Orders
.Include(o => o.OrderLines)
.Include("OrderLines.Product")
.Include("OrderLines.Product.ShippingCategory")
.Where(o => o.SubTotalPrice == 0 || o.ShippingCosts == 0)
.ToList();
var shopService = new ShopService();
// Für die gewählten Bestellungen die Preise berechnen...
foreach (var order in ordersToUpdate)
{
order.SubTotalPrice = shopService.CalculateSubTotalPrice(order);
order.ShippingCosts = shopService.CalculateShippingCosts(order);
}
// ...und speichern.
db.SaveChanges();
}
}