UserCredentialProvider SetCredential Method Kentico 8.1 API Reference
Permanently saves credential for user.

Namespace: CMS.DataCom
Assembly: CMS.DataCom (in CMS.DataCom.dll) Version: 8.0.0.0 (8.1.5347.20411)
Remarks
This method will submit changes of UserInfo to database
See Also
UserCredentialProvider Class
UserCredentialProvider Members
CMS.DataCom Namespace