In payment mode Paying through paypal in c# sample code create payment with a guide code and redirect user to paypal login page. But in our requirement we need to send username password as parameter (same as user pay with creditcard). Becuase our payment will made by admin's directily based on username and password. So please advise it's feasible in c# without login done payment with username and password. If it's feasible then provide code for the same. In our website have auto payment feature so we need to login in backend if it's required. Please advise asap.