// # Preapproval API Operation
// Use the Preapproval API operation to set up an agreement between yourself and a sender for making payments on the sender’s behalf. You set up a preapprovals for a specific maximum amount over a specific period of time and, optionally, by any of the following constraints: the number of payments, a maximum per-payment amount, a specific day of the week or the month, and whether or not a PIN is required for each payment request.
public PreapprovalResponse GeneratePreapproval(Preapproval preapproval)
{
// Create the PreapprovalResponse object
var responsePreapproval = new PreapprovalResponse();
try
{
// # PreapprovalRequest
// The code for the language in which errors are returned
var envelopeRequest = new RequestEnvelope {errorLanguage = "en_US"};
const string pattern = "yyyy-MM-dd";
var requestPreapproval = new PreapprovalRequest(envelopeRequest, preapproval.CancelURL, "USD", preapproval.ReturnURL, "2013-07-15")
{ipnNotificationUrl = preapproval.IPNHost};
// IPN URL
//
// * PayPal Instant Payment Notification is a call back system that is initiated when a transaction is completed
// * The transaction related IPN variables will be received on the call back URL specified in the request
// * The IPN variables have to be sent back to the PayPal system for validation, upon validation PayPal will send a response string "VERIFIED" or "INVALID"
// * PayPal would continuously resend IPN if a wrong IPN is sent
// Create the service wrapper object to make the API call
var service = new AdaptivePaymentsService();
// # API call
// Invoke the Preapproval method in service wrapper object
responsePreapproval = service.Preapproval(requestPreapproval);
if (responsePreapproval != null)
{
// Response envelope acknowledgement
string acknowledgement = "Preapproval API Operation - ";
acknowledgement += responsePreapproval.responseEnvelope.ack.ToString();
Console.WriteLine(acknowledgement + "\n");
// # Success values
if (responsePreapproval.responseEnvelope != null && responsePreapproval.responseEnvelope.ack.ToString().Trim().ToUpper().Equals("SUCCESS"))
{
var preApprovalDetails = PreapprovalDetailsAPIOperation(responsePreapproval.preapprovalKey);
_preApprovalService = DependencyResolver.Current.GetService<IPreApprovalService>();
_preApprovalService.SaveOrUpdate(new PreApproval
{
Approved = preApprovalDetails.approved != null && preApprovalDetails.approved.Value,
ContractStartDate = DateTime.Parse(preApprovalDetails.startingDate),
ContractEndDate = DateTime.Parse(preApprovalDetails.endingDate),
PreApprovalKey = responsePreapproval.preapprovalKey,
Userd = UserProfile.Current.UserId
});
}
// # Error Values
else
{
List<ErrorData> errorMessages = responsePreapproval.error;
foreach (ErrorData error in errorMessages)
{
Console.WriteLine("API Error Message : " + error.message + "\n");
}
}
}
}
// # Exception log
catch (Exception ex)
{
// Log the exception message
Console.WriteLine("Error Message : " + ex.Message);
}
return responsePreapproval;
}