How to add lineitem in the order

[zev-rb2]

for now, I can't find a solution to add lineitem to the order. It seems we can only add/remove lineitem at Cart-level. Is it possible we can add or remove lineitems in a specific order?

[jenschude]

Please take a look at the API documentation. Once an Order is placed it's not mutable regarding the ordered items https://docs.commercetools.com/api/projects/orders#update-order

In case an edit to the Order is needed you have to use the order edit endpoint https://docs.commercetools.com/api/projects/order-edits

[zev-rb2]

Thanks for the quick response. but it seems the methods we want are only available on SDK v2 (e.g., add/remove lineitem). but our .NET project is using v1. How can we resolve that

[jenschude]

Just looked it up. All CartUpdateActions are implementing IStagedOrderUpdateAction. This means you can use them in the AddStagedActionUpdateAction

Else you are always able to implement the necessary interface e.g.:

    public class AddLineItemUpdateAction : IStagedOrderUpdateAction
    {
    }