System.Runtime.Diagnostics.EventTraceActivity class EventTraceActivity Documentation Code public Guid ActivityId public static EventTraceActivity Empty { get; } public static string Name { get; } public EventTraceActivity(bool setOnThread = false) public EventTraceActivity(Guid guid, bool setOnThread = false) public static Guid GetActivityIdFromThread() public static EventTraceActivity GetFromThreadOrCreate(bool clearIdOnThread = false)