private void RegisterParticipant(IParticipant participant, bool unregister) { if (participant != null) { if (unregister) { participant.AttendStatus = Attend.Business.Text.AttendStatus.Confirmed.ToString(); } else { participant.AttendStatus = Attend.Business.Text.AttendStatus.Participated.ToString(); } AttendRegistrationEngine.SaveParticipant(participant); AddStatusText(string.Format("Participant {0} with code {1} is now unregistered.", participant.Email, participant.Code)); } else { AddStatusText(string.Format("ERROR REGISTERING PARTICIPANT")); } DataBindTables(); }