Hi,

The suggested solution is:

- Run the Workflow to make sure the cart is calcuated correctly and coupon is applied.

- Get all the coupons:

foreach (OrderForm form in CartHelper.Cart.OrderForms)
{
foreach (var discount in form.Discounts.Cast().Where(x => !String.IsNullOrEmpty(x.DiscountCode)))
{
AddToDiscountList(discount);
}

foreach (LineItem item in form.LineItems)
{
foreach (var discount in item.Discounts.Cast().Where(x => !String.IsNullOrEmpty(x.DiscountCode)))
{
AddToDiscountList(discount);
}
}

foreach (Shipment shipment in form.Shipments)
{
foreach (var discount in shipment.Discounts.Cast().Where(x => !String.IsNullOrEmpty(x.DiscountCode)))
{
AddToDiscountList(discount);
}
}
}

- Then check if the discount list contain the any discont with DiscountCode equals the coupon code. If not, then coupon code is not valid, and you can display information for the user.

Regards.

/Q

Hi, 

I completely forgot to update this thread on whether or not this worked, but here's the result: 

In order to validate coupon code do the following: 

1) Add coupon to cart

2) Validate cart

3) Run Quan Mai's code from above to check whether or not the coupon was actually added. 

And it works like a charm! 

Thanks :)