how to delete a message

Question

I try to delete a message from my inbox. But i get 100 invailid parameter exception I use csharp sdk

FacebookWebClient fbw = new FacebookWebClient(accesstoken);
fbw.Delete("/userid_messageid");

Answer 1

Did your app create that message in the first place? If not, then you cannot delete it.

Answer 2

There's no way to delete inbox messages with current API's. Permission about inbox is read-only.