Expand Stripe default_card

gistfile1.cs

var client = new StripeClient(SiteSettings.StripeApiKey);
dynamic response = client.RetrieveCustomer(user.CustomerIdentifier);

if (response.IsError)
{
    this.FlashError((string)response.error.message);
}
else
{   
    // expand default_card
    var active_card = (from cc in (List<dynamic>)response.cards.data
                      where cc.id == response.default_card
                      select cc).Single();

    model.ActiveCardNumber = active_card.last4;
    model.ActiveCardType = active_card.type;
}