Get thread's author name in incident workspace

Topic by Sophia Cai

I get a thread of a incident in add-in.

Incident = _recordContext.GetWorkspaceRecord(RightNow.AddIns.Common.WorkspaceRecordType.Incident) as IIncident;
IThread thread = Incident.Threads[0];

And I want to get the author of this thread, if it is a thread created by agent.

However, thread.AcctID only returns the id of the agent. How can I get the name of this agent?

Thanks,

Sophia