UserInfoProvider IsUserNamePrefixUnique Method Kentico 8.0 API Reference
Test if there is no same site prefix username (f.e. 'site.{GUID}.{Name}' and '{Name}' is not allowed at the same time}

Namespace: CMS.Membership
Assembly: CMS.Membership (in CMS.Membership.dll) Version: 8.0.0.0 (8.0.5239.26125)

Return Value

Type: OnlineBoolean
See Also