Serilog Log Event enricher that adds System.Diagnostics.Activity to act as OperationId in Application Insights

Serilog-ApplicationInsights-OperationIdEnricher.cs

using System.Diagnostics;
using Serilog.Core;
using Serilog.Events;

namespace YourCompany.YourService.YourProject.Serilog
{
    public class OperationIdEnricher : ILogEventEnricher
    {
        public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
        {
            var activity = Activity.Current;

            if (activity is null) return;

            logEvent.AddPropertyIfAbsent(new LogEventProperty("Operation Id", new ScalarValue(activity.Id)));
            logEvent.AddPropertyIfAbsent(new LogEventProperty("Parent Id", new ScalarValue(activity.ParentId)));
        }
    }
}