/// <summary>
        /// Handle the form submisson
        /// </summary>
        /// <param name="sender">reference to the sender</param>
        /// <param name="e">arguments for the event</param>
        protected void btn_submit_Click(object sender, EventArgs e)
        {
            string orderReferenceId = tb_ORId.Text;
            string orderAmount = tb_OrderAmount.Text;
            int shippingOption = getShippingOption();

            int authorizationOption = Convert.ToInt32(rb_AuthrorizationOption.SelectedValue);
            OffAmazonPaymentsServiceSimpleCheckout simpleCheckout = new OffAmazonPaymentsServiceSimpleCheckout(orderReferenceId);
            RunSample(simpleCheckout, orderReferenceId, orderAmount, shippingOption, authorizationOption);
        }
        public static void Main(string[] args)
        {
            Console.WriteLine("===========================================");
            Console.WriteLine("Welcome to Off Amazon Payments Service Simple Checkout Sample!");
            Console.WriteLine("===========================================");
            Console.WriteLine();

            string orderReferenceId = CLIHelper.getStringFromConsole("order reference id");
            double orderAmount = CLIHelper.getDoubleFromConsole("order amount");
            int authorizationOption = CLIHelper.getAuthorizationOption();
            int shippingOption = CLIHelper.getShippingOption();
            OffAmazonPaymentsServiceSimpleCheckout simpleCheckout = new OffAmazonPaymentsServiceSimpleCheckout(orderReferenceId);
            RunSample(orderReferenceId, orderAmount, shippingOption, authorizationOption, simpleCheckout);

            Console.WriteLine();
            Console.WriteLine("===========================================");
            Console.WriteLine("End of output. You can close this window");
            Console.WriteLine("===========================================");

            System.Threading.Thread.Sleep(50000);
        }
        private static void RunSample(string orderReferenceId, double orderAmount, int shippingOption, int authorizationOption, OffAmazonPaymentsServiceSimpleCheckout simpleCheckout)
        {
            /************************************************************************
             * Invoke Get Order Reference Details Action
             ***********************************************************************/
            GetOrderReferenceDetailsResponse getOrderDetails = simpleCheckout.GetOrderReferenceDetails();

            if (getOrderDetails == null)
                throw new OffAmazonPaymentsServiceException("The response from GetOrderReference request is null");

            /************************************************************************
             * Add the tax and shipping rates here
             * Get the rates by using the CountryCode and the StateOrRegionCode from the orderReferenceDetails
             ***********************************************************************/

            Destination destination = getOrderDetails.GetOrderReferenceDetailsResult.OrderReferenceDetails.Destination;
            TaxAndShippingRates rates = new TaxAndShippingRates(destination);
            string totalAmount = rates.getTotalAmountWithTaxAndShipping(orderAmount, shippingOption).ToString("0.##");

            Console.WriteLine("=========================Tax and Shipping Calculation========================");
            Console.WriteLine("The tax and shipping rate will be calculated based on the CountryCode: " + destination.PhysicalDestination.CountryCode
                + " and the StateOrRegionCode: " + destination.PhysicalDestination.StateOrRegion);
            Console.WriteLine("The total amount is " + totalAmount);
            Console.WriteLine("=============================================================================");

            /************************************************************************
             * Invoke Set Order Reference Details Action
             ***********************************************************************/
            SetOrderReferenceDetailsResponse setOrderDetailsResponse = simpleCheckout.SetOrderReferenceDetails(totalAmount);
            if (setOrderDetailsResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from SetOrderReference request is null");
            Console.WriteLine("=============================================================================");

            /************************************************************************
             * Invoke Confirm Order Reference Action
             ***********************************************************************/
            if (simpleCheckout.ConfirmOrderReferenceObject() == null)
                throw new OffAmazonPaymentsServiceException("The response from ConfirmOrderResponse request is null");
            Console.WriteLine("=============================================================================");

            /************************************************************************
             * Invoke Authorize Action
             ***********************************************************************/
            AuthorizeResponse authResponse = simpleCheckout.AuthorizeAction(setOrderDetailsResponse, authorizationOption);
            if (authResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from Authorization request is null");
            Console.WriteLine("=============================================================================");

            /************************************************************************
             * When Regular Asynchronous Authorization is used, the Authorization
             * State remains in pending and we need to wait for the state change.
             * Fast Authorization has a synchronous response and doesn't require this.
             ***********************************************************************/
            if (authorizationOption == 1)
            {
                /************************************************************************
                 * Check the authorization status unitl it is not "PENDING" any more
                 * GetAuthorizeDetails is contained in this method
                 ***********************************************************************/
                simpleCheckout.CheckAuthorizationStatus(authResponse);
            }

            /************************************************************************
             * Invoke Capture Action
             ***********************************************************************/
            CaptureResponse captureResponse = simpleCheckout.CaptureAction(authResponse, totalAmount);
            if (captureResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from Caputre request is null");

            Console.WriteLine("=============================================================================");

            /************************************************************************
             * Invoke GetCaptureDetails Action
             ***********************************************************************/
            if (simpleCheckout.GetCaptureDetails(captureResponse) == null)
                throw new OffAmazonPaymentsServiceException("The response from GetCaputreDetails request is null");
            Console.WriteLine("=============================================================================");

            /************************************************************************
             * Invoke CloseOrderReference Action
             ***********************************************************************/
            if (simpleCheckout.CloseOrderReference() == null)
                throw new OffAmazonPaymentsServiceException("The response from CloseOrderReference request is null");
        }
        private void RunSample(OffAmazonPaymentsServiceSimpleCheckout simpleCheckout,
            string orderReferenceId, string orderAmount, int shippingOption, int authorizationOption)
        {
            /************************************************************************
            * Invoke Get Order Reference Details Action
            ***********************************************************************/
            GetOrderReferenceDetailsResponse getOrderDetails = simpleCheckout.GetOrderReferenceDetails();
            if (getOrderDetails == null)
                throw new OffAmazonPaymentsServiceException("The response from GetOrderReference request is null");

            /************************************************************************
             * Add the tax and shipping rates here
             * Get the rates by using the CountryCode and the StateOrRegionCode from the orderReferenceDetails
            ***********************************************************************/
            Destination destination = getOrderDetails.GetOrderReferenceDetailsResult.OrderReferenceDetails.Destination;
            TaxAndShippingRates rates = new TaxAndShippingRates(destination);
            string totalAmount = rates.getTotalAmountWithTaxAndShipping(Convert.ToDouble(orderAmount), shippingOption).ToString("0.##");

            Address address = destination.PhysicalDestination;
            lblShipping.Text = "The shipping address is: <br>" + address.City + "<br>" + address.StateOrRegion + "<br>" + address.PostalCode + "<br>"
                + "The total amount with tax and shipping is: " + totalAmount + "<br>";
            /************************************************************************
            * Invoke Set Order Reference Details Action
            ***********************************************************************/
            SetOrderReferenceDetailsResponse setOrderDetailsResponse = simpleCheckout.SetOrderReferenceDetails(totalAmount);
            if (setOrderDetailsResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from SetOrderReference request is null");

            /************************************************************************
            * Invoke Confirm Order Reference Action
            ***********************************************************************/
            if (simpleCheckout.ConfirmOrderReferenceObject() == null)
                throw new OffAmazonPaymentsServiceException("The response from ConfirmOrderResponse request is null");

            /************************************************************************
            * Invoke Authorize Action
            ***********************************************************************/
            AuthorizeResponse authResponse = simpleCheckout.AuthorizeAction(setOrderDetailsResponse, authorizationOption);
            if (authResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from Authorization Response request is null");

            /************************************************************************
            * Wait for the notification from ipn.aspx page in a loop, then print the corresponding information
            ***********************************************************************/
            lblNotification.Text += formatStringForDisplay(WaitAndGetNotificationDetails(authResponse.AuthorizeResult.AuthorizationDetails.AmazonAuthorizationId + "_Authorize"));
            GetAuthorizationDetailsResponse response = simpleCheckout.CheckAuthorizationStatus(authResponse);

            /************************************************************************
             * On an IPN callback, call Get Authorization Details to retreive additional
             * information about the authorization - this is done as part of the
             * previous call to check the status.
             ***********************************************************************/
            StringWriter stringWriter = new StringWriter();
            GetAuthorizationDetailsSample.printGetAuthorizationDetailsResponseToBuffer(response, stringWriter);
            lblNotification.Text += formatStringForDisplay(stringWriter.ToString());

            /************************************************************************
            * Invoke Capture Action
            ***********************************************************************/
            CaptureResponse captureResponse = simpleCheckout.CaptureAction(authResponse, totalAmount);
            if (captureResponse == null)
                throw new OffAmazonPaymentsServiceException("The response from Caputre Response request is null");

            /************************************************************************
            * Wait for the notification from ipn.aspx page in a loop, then print the corresponding information
            ***********************************************************************/
            lblNotification.Text += formatStringForDisplay(WaitAndGetNotificationDetails(captureResponse.CaptureResult.CaptureDetails.AmazonCaptureId + "_Capture"));

            /************************************************************************
            * Invoke Get Capture Details Action
            ***********************************************************************/
            if (simpleCheckout.GetCaptureDetails(captureResponse) == null)
                throw new OffAmazonPaymentsServiceException("The response from GetCaputreDetails Response request is null");

            /************************************************************************
            * Invoke Close Order Reference Action
            ***********************************************************************/
            if (simpleCheckout.CloseOrderReference() == null)
                throw new OffAmazonPaymentsServiceException("The response from CloseOrderReference Response request is null");

            /************************************************************************
            * Wait for the notification from ipn.aspx page in a loop, then print the corresponding information
            ***********************************************************************/
            lblNotification.Text += formatStringForDisplay(WaitAndGetNotificationDetails(orderReferenceId + "_OrderReference"));
        }