https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.eventing.reader.eventtask.eventguid?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
EventTask.EventGuid Property (System.Diagnostics.Eventing.Reader) | Microsoft Learn
Gets the event globally unique identifier (GUID) associated with the task.
property systemdiagnosticseventingreadermicrosoft