/// <summary>
/// Process the order
/// </summary>
protected void wzdCheckOut_FinishButtonClick(object sender, WizardNavigationEventArgs e)
{
if (Profile.ShoppingCart.CartItems.Count > 0) {
if (Profile.ShoppingCart.Count > 0) {
// display ordered items
CartListOrdered.Bind(Profile.ShoppingCart.CartItems);
// display total and credit card information
ltlTotalComplete.Text = ltlTotal.Text;
ltlCreditCardComplete.Text = ltlCreditCard.Text;
// create order
OrderInfo order = new OrderInfo(int.MinValue, DateTime.Now, User.Identity.Name, GetCreditCardInfo(), billingForm.Address, shippingForm.Address, Profile.ShoppingCart.Total, Profile.ShoppingCart.GetOrderLineItems(), null);
// insert
Order newOrder = new Order();
newOrder.Insert(order);
// destroy cart
Profile.ShoppingCart.Clear();
Profile.Save();
}
}
else {
lblMsg.Text = "<p><br>Can not process the order. Your cart is empty.</p><p class=SignUpLabel><a class=linkNewUser href=Default.aspx>Continue shopping</a></p>";
wzdCheckOut.Visible = false;
}
}
/// <summary>
/// Process a batch of asynchronous orders from the queue and submit them to the database within a transaction
/// </summary>
private static void ProcessOrders()
{
// the transaction timeout should be long enough to handle all of orders in the batch
TimeSpan tsTimeout = TimeSpan.FromSeconds(Convert.ToDouble(transactionTimeout * batchSize));
Order order = new Order();
while (true) {
// queue timeout variables
TimeSpan datetimeStarting = new TimeSpan(DateTime.Now.Ticks);
double elapsedTime = 0;
int processedItems = 0;
ArrayList queueOrders = new ArrayList();
//OrderInfo orderData = orderQueue.Receive(timeout);
using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required, tsTimeout)) {
// Receive the orders from the queue
for (int j = 0; j < batchSize; j++) {
try {
//only receive more queued orders if there is enough time
if ((elapsedTime + queueTimeout + transactionTimeout) < tsTimeout.TotalSeconds) {
queueOrders.Add(order.ReceiveFromQueue(queueTimeout));
}
else {
j = batchSize; // exit loop
}
//update elapsed time
elapsedTime = new TimeSpan(DateTime.Now.Ticks).TotalSeconds - datetimeStarting.TotalSeconds;
}
catch (TimeoutException) {
//exit loop because no more messages are waiting
j = batchSize;
}
}
//process the queued orders
for (int k = 0; k < queueOrders.Count; k++) {
order.Insert((OrderInfo)queueOrders[k]);
processedItems++;
totalOrdersProcessed++;
}
//batch complete or MSMQ receive timed out
ts.Complete();
}
Console.WriteLine("(Thread Id " + Thread.CurrentThread.ManagedThreadId + ") batch finished, " + processedItems + " items, in " + elapsedTime.ToString() + " seconds.");
}
}