Custom ActivityTracker for Custom ActivityId

Program.cs

using System.Diagnostics.Tracing;

class Program
{
    static void Main(string[] args)
    {
        HandleRequest(Guid.NewGuid());
    }

    static void HandleRequest(Guid activityId)
    {
        Console.WriteLine("Starting request with ID: " + activityId);

        MyActivityTracker.SetActivityId(activityId);
        DoSomeWork();
        Task.Run(() => DoSomeWork());
        MyActivityTracker.SetActivityId(Guid.Empty);
    }

    static void DoSomeWork()
    {
        Console.WriteLine($"  ThreadId: {Thread.CurrentThread.ManagedThreadId} ActivityId: {EventSource.CurrentThreadActivityId}");
    }
}

static class MyActivityTracker
{
    static AsyncLocal<Guid> _activityId = new AsyncLocal<Guid>(ActivityIdChanged);

    public static void SetActivityId(Guid activityId)
    {
        _activityId.Value = activityId;
    }

    private static void ActivityIdChanged(AsyncLocalValueChangedArgs<Guid> args)
    {
        EventSource.SetCurrentThreadActivityId(args.CurrentValue);
    }
}