You could get/set property values by using ProfileManager class
ProfileManager profileManager = ProfileManager.GetManager();
var profileUser = profileManager.CreateProfile(user);
var prof = profileManager.GetProfiles().Where(p => p.User.UserName ==
var getField = prof.GetValue(
The profile provider is declared inside App_Data\Sitefinity\Configuration\SecurityConfig.config from where you can change its properties. Another option is using backend UI - Sitefinity/Administration/Settings/Security/Profile Providers
Currently there is an issue with adding custom profile properties. I will update the status of the post with more details once the issue has been resolved.
the Telerik team
Check out Telerik Trainer
, the state of the art learning tool for Telerik products.