Appinsights dependency inject in razor page with no controller

Question

If I have an asp.net core razor page, with no controller, how do I hook the dependency injection as suggested in

#1152

and

https://docs.microsoft.com/en-us/azure/azure-monitor/app/asp-net-core#how-can-i-track-telemetry-thats-not-automatically-collected

The code as follows runs but the events are never written when I use the dependency injections methods for .net core. Other regular app insights events process fine.

namespace simplewebapp.Pages { public class IndexModel : PageModel { private readonly ILogger _logger; private TelemetryClient telemetry; public IndexModel(ILogger logger, TelemetryClient telemetry) { _logger = logger; this.telemetry = telemetry; telemetry.TrackEvent("IndexPage_IndexModel"); }