BadgeInfoProvider BadgeCollectionChanged Method Kentico 8.1 API Reference
Re-distributes user badges according to current badge collection. This opperation is time-consuming for large amount of users. It's recommended call this method from separate thread.

Namespace: CMS.Membership
Assembly: CMS.Membership (in CMS.Membership.dll) Version: 8.0.0.0 (8.1.5347.20411)
See Also
BadgeInfoProvider Class
BadgeInfoProvider Members
CMS.Membership Namespace