DPmax_ECPayDotNetCore/ECPay/bin/Debug/netcoreapp2.2/Views/ECPay.cshtml
@model ECPay.Services.Checkout.PaymentConfiguration

@{
    Layout = "ECPay";
}

<form asp-controller="Payment" asp-action="Checkout" method="post">
    <div class="payment">
        <button class="btn btn-payment mt-3" type="submit">Test Checkout</button>
    </div>
</form>