Unable to receive callback when alarm closed

MIP
, , , ,
1

Using C# and 2020R2 SDK

The following code works and I get a callback whenever a new alarm is generated:

MessageCommunication comm = MessageCommunicationManager.Get(EnvironmentManager.Instance.MasterSite.ServerId);
comm.RegisterCommunicationFilter(AlarmHandler, new CommunicationIdFilter(MessageId.Server.NewAlarmIndication), null, EndPointType.Server);

This code is also executed and registers the same handler for changed alarms, however I never get a message when the alarm is closed by a user. What am I doing wrong?

comm.RegisterCommunicationFilter(AlarmHandler, new CommunicationIdFilter(MessageId.Server.ChangedAlarmIndication), null, EndPointType.Server);
2

Please explore AlarmEventViewer sample which has MessageId.Server.NewAlarmIndication and MessageId.Server.ChangedAlarmIndication. The sample works fine when you close an alarm through the Smart Client.

https://doc.developer.milestonesys.com/html/index.html?base=samples/alarmviewer_sample.html&tree=tree_search.html?search=alarmeventviewer