public void ProcessOrder(Cart cart, ShippingDetails shippingInfo)
        {
            using (var smtpClient = new SmtpClient())
            {
                smtpClient.EnableSsl = emailSettings.UseSsl;
                smtpClient.Host = emailSettings.ServerName;
                smtpClient.Port = emailSettings.ServerPort;
                smtpClient.UseDefaultCredentials = false;
                smtpClient.Credentials = new NetworkCredential(emailSettings.Username, emailSettings.Password);
            if (emailSettings.WriteAsFile) {
            smtpClient.DeliveryMethod
            = SmtpDeliveryMethod.SpecifiedPickupDirectory;
            smtpClient.PickupDirectoryLocation = emailSettings.FileLocation;
            smtpClient.EnableSsl = false;
             }

            StringBuilder body = new StringBuilder()
                    .AppendLine("A new order has been submitted")
                    .AppendLine("---")
                    .AppendLine("Items:");

               foreach (var line in cart.Lines) {
            var subtotal = line.Product.Price * line.Quantity;
            body.AppendFormat("{0} x {1} (subtotal: {2:c}", line.Quantity,
            line.Product.Name,
            subtotal);
            }
            body.AppendFormat("Total order value: {0:c}", cart.ComputeTotalValue())
            .AppendLine("---")
            .AppendLine("Ship to:")
            .AppendLine(shippingInfo.Name)
            .AppendLine(shippingInfo.Line1)
            .AppendLine(shippingInfo.Line2 ?? "")
            .AppendLine(shippingInfo.Line3 ?? "")
            .AppendLine(shippingInfo.City)
            .AppendLine(shippingInfo.State ?? "")
            .AppendLine(shippingInfo.Country)
            .AppendLine(shippingInfo.Zip)
            .AppendLine("---")
            .AppendFormat("Gift wrap: {0}",
            shippingInfo.GiftWrap ? "Yes" : "No");

            MailMessage mailMessage = new MailMessage(
            emailSettings.MailFromAddress, // From
            emailSettings.MailToAddress, // To
            "New order submitted!", // Subject
            body.ToString()); // Body
            if (emailSettings.WriteAsFile) {
            mailMessage.BodyEncoding = Encoding.ASCII;
            }
            smtpClient.Send(mailMessage);
            }
        }
 public ViewResult Checkout(Cart cart, ShippingDetails shippingDetails)
 {
     if (cart.Lines.Count() == 0)
     {
         ModelState.AddModelError("", "Sorry, your cart is empty!");
     }
     if (ModelState.IsValid)
     {
         orderProcessor.ProcessOrder(cart, shippingDetails);
         cart.Clear();
         return View("Completed");
     }
     else
     {
         return View(shippingDetails);
     }
 }