public string ChangeFacebookId(string facebookid, string facebookprofilepictureurl, string userEmail) { var user1 = DependencyService.Get <IDBAccess.IBlobStorage>().GetUserByFacebookID(facebookid); if (user1 is null) { var user = DependencyService.Get <IDBAccess.IBlobStorage>().GetUserByFacebookID(userEmail); user.FacebookId = facebookid; user.ProfilePictureURL = facebookprofilepictureurl; var success = DependencyService.Get <IDBAccess.IBlobStorage>().UpdateUser(user.id, user); if (!success) { return(English.SomethingWentWrong()); } else { return(String.Empty); } } else { return(English.AlreadyHaveThisFacebookAcoount()); } }