${mdlc:item=RequestId} and ${aspnet-request-posted-body} not returning data

I am using ${aspnet-request-posted-body} in my nlog.config file ,I have also added configuartions in startup file. but ${aspnet-request-posted-body} not logging request body and ${mdlc:item=RequestId} also not working

    <target xsi:type="File" name="allfile" fileName="c:LogsApi_.log"
                layout="==>[${event-properties:item=traceLevel}: User=${aspnet-user-identity}; ]
                                ${when:when=('${event-properties:item=traceLevel}' == 'Verbose' and 
            '${aspnet-request-method}' != 'GET')   > 0 and length('${mdlc:item=RequestId}') > 0:inner=${newline}Request-Body: ${aspnet-request-posted-body}}
                                ${newline}Logger name: ${logger} 
                                ${newline}" />

${aspnet-request-posted-body} and ${mdlc:item=RequestId} used in nlog file
To enable ${aspnet-request-posted-body} in startup I used this code.

              app.Use(async (context, next) =>                     
              {
                            context.Request.EnableBuffering();
                            await next?.Invoke();
              });

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Answers:

Method 1

Answers:

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Method 1

Would probably start with something simple like this:

<target xsi:type="File" name="allfile" fileName="c:LogsApi_.log"
            layout="RequestId=${mdlc:item=RequestId} RequestBody=${aspnet-request-posted-body}" />

And then enable the NLog InternalLogger at Debug-Level and look for clues:

Besides calling EnableBuffering() then you also need to correctly register NLog as LoggingProvider with the method UseNLog(). See also https://github.com/NLog/NLog/wiki/Getting-started-with-ASP.NET-Core-3

If you are not using Microsoft ILogger for logging within the context for the active HttpRequest, then RequestId will not be available.

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