public async void SendOrder(List <SaleItem> saleItems)
{
PointOfSaleBackEnd backEnd = new PointOfSaleBackEnd();
Console.WriteLine("FrontEnd: Started Async Work");
Task <VerifiedOrder> orderTask = backEnd.PlaceOrderAsync(saleItems);
Console.WriteLine("FrontEnd: Doing Other Work");
Thread.Sleep(1000);
Console.WriteLine("FronEnd: Retrieving Async Work");
VerifiedOrder orderInformation = await orderTask;
if (orderInformation != null)
{
Console.WriteLine($"Order Verfied: ID {orderInformation.OrderId}");
Console.WriteLine($"Order Verfied: Total ${orderInformation.OrderTotal}");
}
else
{
Console.WriteLine("Error Placing Order With Service");
}
}
public async Task <VerifiedOrder> PlaceOrderAsync(List <SaleItem> saleItems)
{
try
{
var response = await _transactionServer.PostAsJsonAsync <List <SaleItem> >(
"http://localhost:3030/order",
saleItems);
VerifiedOrder result = await response.Content.ReadAsAsync <VerifiedOrder>();
Console.WriteLine($"Response Headers: {response.Headers}");
Console.WriteLine($"Response Status Code: {response.StatusCode}");
TransactionComplete = true;
return(result);
}
catch (Exception e)
{
Console.WriteLine($"Exception: {e.Message}");
}
return(null);
}
