MyEventSource.cs

[EventSource(Name = "MyCompany.MyApp")]
public sealed class MyEventSource : EventSource
{
    public static readonly MyEventSource Log = new MyEventSource();
    
    private EventCounter _requestCounter;
    private PollingCounter _queueLengthCounter;
    
    private MyEventSource()
    {
        _requestCounter = new EventCounter("request-count", this);
        _queueLengthCounter = new PollingCounter("queue-length", this, 
            () => GetQueueLength());
    }
    
    public void RecordRequest()
    {
        _requestCounter.WriteMetric(1);
    }
}