WestinPayIntegration

using System;
using System.Collections.Generic;
using System.Net;
using System.Text;
using System.Web;

namespace PaymentIntegration
{
    class Program
    {
        static void Main(string[] args)
        {
            var parameters = new Dictionary<string, string>
            {
                { "identifier", "DFU80XZIKS" },
                { "currency", "USD" },
                { "amount", "100.00" },
                { "details", "Purchase T-shirt" },
                { "ipn_url", "http://example.com/ipn_url.php" },
                { "cancel_url", "http://example.com/cancel_url.php" },
                { "success_url", "http://example.com/success_url.php" },
                { "public_key", "your_public_key" },
                { "site_logo", "https://westinpay.com/assets/images/logoIcon/logo.png" },
                { "checkout_theme", "dark" },
                { "customer_name", "John Doe" },
                { "customer_email", "john@mail.com" }
            };

            // Test endpoint
            string url = "https://westinpay.com/sandbox/payment/initiate";

            // Live endpoint
            // string url = "https://westinpay.com/payment/initiate";

            var client = new WebClient();
            var response = client.UploadValues(url, "POST", parameters);
            var result = Encoding.UTF8.GetString(response);

            // result contains the response back
            Console.WriteLine(result);
        }
    }
}