ChatRoomUserHelper KickUserPermanentlyFromRoom Method Kentico 8.1 API Reference
Kicks user permanently from this room. He is deleted from db and from memory. He can enter again only after receiving another invitation.

Namespace: CMS.Chat
Assembly: CMS.Chat (in CMS.Chat.dll) Version: 8.0.0.0 (8.1.5347.20411)
See Also