public string PayWithPayPal(int id,
string returnUrl,
string cancelUrl,
string ipnUrl,
string senderEmail,
IEnumerable<PaymentItem> payments,
IPaymentHandler paymentHandler,
PaymentConstants config)
{
HttpWebRequest request;
WebResponse response = null;
StreamReader reader = null;
string resultUrl = null;
try
{
request = CreatePaypalRequest(PayPalConstants.MessageFormat.NameValue, PayPalConstants.MessageFormat.Xml, config);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
string postData = "&actionType=PAY";
postData += "&senderMail=" + senderEmail;
postData += "&cancelUrl=" + cancelUrl;
postData += "&ipnNotificationUrl=" + ipnUrl;
postData += "¤cyCode=" + "EUR";
postData += "&feesPayer=" + PayPalConstants.FeePayer.EachReceiver;
foreach (var payment in payments)
{
postData += "&receiverList.receiver(" + payment.Index.ToString() + ").amount=" + payment.Amount.ToString("F");
postData += "&receiverList.receiver(" + payment.Index.ToString() + ").email=" + payment.Email;
}
postData += "&requestEnvelope.errorLanguage=" + "en_US";
postData += "&returnUrl=" + returnUrl;
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
request.ContentLength = byteArray.Length;
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
response = request.GetResponse();
dataStream = response.GetResponseStream();
reader = new StreamReader(dataStream);
string responseFromServer = reader.ReadToEnd();
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(responseFromServer);
XmlNodeList nodes = xdoc.GetElementsByTagName("ack");
if (nodes.Count > 0)
{
string ackMessage = nodes[0].InnerText;
if (!string.IsNullOrEmpty(ackMessage))
{
nodes = xdoc.GetElementsByTagName("payKey");
if (nodes.Count > 0)
{
string payKey = nodes[0].InnerText.Trim();
if (ackMessage.ToLower() == "success")
{
if (paymentHandler.CreateTransactions(id, payKey, payments))
{
resultUrl = config.ApprovalUrl + payKey;
}
}
else
{
_Logger.Error("Paypal: API call failure\r\n" + responseFromServer);
}
}
else
{
throw new Exception("Paypal: invalid API response XML format");
}
}
else
{
throw new Exception("Paypal: invalid API response XML format");
}
}
else
{
throw new Exception("Paypal: invalid API response XML format");
}
}
catch (Exception ex)
{
_Logger.Error(ex.Message);
}
finally
{
if (reader != null)
{
reader.Close();
}
if (response != null)
{
response.Close();
}
}
return resultUrl;
}
