gistfile1.txt

return new PaymentFormResult()
{
    Form = new PaymentForm(cancelUrl, FormMethod.Get)
        .WithAttribute("onsubmit", "return handlePaylikeCheckout(event)")
        .WithJsFile("//sdk.paylike.io/3.js")
        .WithJs(@"
            var paylike = Paylike('" + publicKey + @"');
            window.handlePaylikeCheckout = function (e) {
                e.preventDefault();
                paylike.popup({
                  currency: 'EUR',
                  amount: 10000,
                  custom: {
                    orderId: '"+ order.Id +@"',
                  },
                }, function( err, res ){
                  if (err)
                    return console.log(err);
                  location.href = '"+ continueUrl + @"';
                });
                return false;
            }
        ")
};