SendInBlue API .NET6 Core Razor C# 中的页面 AddContactToList 捕获并抛出错误

Question

I a using the exact code here https://developers.sendinblue.com/reference/addcontacttolist-1 to add a user to a list. It all works, user is created/updated (if exists) then the user is added to the list. However, when adding to the list it throws an error.

Error calling AddContactToList: {"code":"invalid_parameter","message":"Contact already in list and/or does not exist"}

Their code shows a display result in JSON which will never get hit because it throws at the Add method.

Answer 1

The error is straight-forward. The contact is already in the list and the API enforces uniqueness.

You can get the contacts that are already in the list via getContactsFromList

https://developers.sendinblue.com/reference/getcontactsfromlist

or contact details via getContactInfo :

https://developers.sendinblue.com/reference/getcontactinfo-1

So, you will need to check whether the contact is already in the list. If so, then don't add it . Otherwise, you can add it without problems.