async void OnOrderButtonClick(object sender, EventArgs args)
{
var orderSum = orderedProducts.Sum((a) => a.Amount * a.Price);
var message = "Are you sure to order for " + string.Format("{0:0.00}", orderSum) + " CHF?";
var orderConfirmed = await DisplayAlert("Buy products?", message, "Yes", "No");
if (orderConfirmed)
{
var customerPosition = await PositionHelper.GetPositionOrNull(this);
var response = await App.Rest.CreateOrder(orderedProducts, customerPosition);
if (response != null)
{
Debug.WriteLine("Created order with id {0}", response.Id);
await Navigation.PushModalAsync(new OrderConfirmPage(response));
}
}
}