OnBeforeMessageSavedEventHandler DelegateKentico 8.0 API Reference
Refferences to the method called mefore message is saved.

Namespace: CMS.MessageBoards
Assembly: CMS.MessageBoards (in CMS.MessageBoards.dll) Version: 8.0.0.0 (8.0.5239.26125)
See Also
CMS.MessageBoards Namespace