public string SendPayment(PaypalPaymentParam paymentParam)
{
try
{
APIContext apiContext = PaypalConfig.GetAPIContext();
var guid = Convert.ToString((new Random()).Next(100000));
var createdPayment = CreatePayment(apiContext, paymentParam.CallbackUrl + "?guid=" + guid, paymentParam);
var links = createdPayment.links.GetEnumerator();
string paypalRedirectUrl = null;
while (links.MoveNext())
{
Links lnk = links.Current;
if (lnk.rel.ToLower().Trim().Equals("approval_url"))
{
paypalRedirectUrl = lnk.href;
}
}
paymentParam.Session.Add(guid, ((Payment)createdPayment).id);
return(paypalRedirectUrl);
}
catch
{
return("NG");
}
}
private float GetTotalMoney(PaypalPaymentParam paymentParam)
{
float total = paymentParam.Shipping + paymentParam.Tax;
foreach (Item item in paymentParam.Items)
{
total += float.Parse(item.price) * float.Parse(item.quantity);
}
return(total);
}
private ItemList GetItemList(PaypalPaymentParam paymentParam)
{
var itemList = new ItemList()
{
items = new List <Item>()
};
itemList.items.AddRange(paymentParam.Items);
return(itemList);
}
public float SendPaymentByCreditCard(PaypalPaymentParam paymentParam)
{
CreditCard creditCard = new CreditCard()
{
billing_address = new Address()
{
city = "Johnstown", country_code = "US", line1 = "52 N Main ST", postal_code = "43210", state = "OH"
},
cvv2 = paymentParam.CreditCard.cvv2,
expire_month = paymentParam.CreditCard.expire_month,
expire_year = paymentParam.CreditCard.expire_year,
first_name = paymentParam.CreditCard.first_name,
last_name = paymentParam.CreditCard.last_name,
type = "visa",
number = paymentParam.CreditCard.number,
};
FundingInstrument fundInstrument = new FundingInstrument();
fundInstrument.credit_card = creditCard;
var fundingInstruments = new List <FundingInstrument>();
fundingInstruments.Add(fundInstrument);
Payer payer = new Payer()
{
funding_instruments = fundingInstruments,
payment_method = "credit_card"
};
var payment = new Payment()
{
intent = "sale",
payer = payer,
transactions = GetTransactions(paymentParam),
};
try
{
APIContext apiContext = PaypalConfig.GetAPIContext();
Payment createdPayment = payment.Create(apiContext);
if (createdPayment.state.ToLower() != "approved")
{
return(-1);
}
return(GetTotalMoney(createdPayment.transactions));;
}
catch
{
return(-1);
}
}
private List <Transaction> GetTransactions(PaypalPaymentParam paymentParam)
{
var transactions = new List <Transaction>();
// Adding description about the transaction
transactions.Add(new Transaction()
{
description = paymentParam.Description,
invoice_number = paymentParam.InvoiceNumber, //Generate an Invoice No
amount = GetAmount(paymentParam),
item_list = GetItemList(paymentParam)
});
return(transactions);
}
private Amount GetAmount(PaypalPaymentParam paymentParam)
{
var details = new Details()
{
tax = paymentParam.Tax.ToString(),
shipping = paymentParam.Shipping.ToString(),
subtotal = (paymentParam.Tax + paymentParam.Shipping).ToString(),
};
var amount = new Amount()
{
currency = CommonConstants.CURRENCY,
total = GetTotalMoney(paymentParam).ToString(), // Total must be equal to sum of tax, shipping and subtotal.
details = details.subtotal == "0" ? null : details
};
return(amount);
}
private Payment CreatePayment(APIContext apiContext, string redirectUrl, PaypalPaymentParam paymentParam)
{
var payer = new Payer();
payer.payment_method = paymentParam.PaymentMethod;
var redirectUrls = new RedirectUrls()
{
cancel_url = redirectUrl + "&Cancel=true",
return_url = redirectUrl
};
payment = new Payment()
{
intent = "sale",
payer = payer,
transactions = GetTransactions(paymentParam),
redirect_urls = redirectUrls
};
return(payment.Create(apiContext));
}
