ASP.NET Trace Identifier

Platforms Supported: All (Supported in ASP.NET Core and ASP.NET)

Introduced in NLog.Web.AspNetCore ver. 4.3.1 and NLog.Web ver. 4.7.1

${aspnet-TraceIdentifier:ignoreActivityId=boolean}

• ignoreActivityId: Only ASP.NET Core. Use HttpContext.TraceIdentifier instead of System.Diagnostics.Activity.Current.Id

• ASP.NET Core 3: by default System.Diagnostics.Activity.Current.Id.
• ASP.NET Core 1+2: HttpContext.TraceIdentifier
• ASP.NET: HttpWorkerRequest.RequestTraceIdentifier.
  • Requires IIS ETW feature enabled, see Microsoft docs
  • Alternative could use ${activityid} together with CorrelationManager.ActivityId.

See code