I have a Azure Function App in .net core 6, I was already using Microsoft.Extension.Logging for logging and everything was working perfectly, now I have a requirement to support structured logging so I decided to use Serilog, but even after doing all configurations structured logs are not showing in application insights as expected,

This is my startup.cs configuration for Serilog

public override void Configure(IFunctionsHostBuilder builder)
{
  var telemetryConfiguration = TelemetryConfiguration.CreateDefault();
  telemetryConfiguration.ConnectionString = Settings.ApplicationInsightsConnectionString;

  // Create and initialize the dependency tracking module
  var dependencyModule = new DependencyTrackingTelemetryModule();
  dependencyModule.Initialize(telemetryConfiguration);

  // Create the custom telemetry processor
  var telemetryProcessorChainBuilder = telemetryConfiguration.DefaultTelemetrySink.TelemetryProcessorChainBuilder;
  var configuration = builder.Services.BuildServiceProvider().GetService<IConfiguration>();
  telemetryProcessorChainBuilder.Use(next => new CustomTelemetryProcessor(next, configuration));

  // Build the telemetry processor chain
  telemetryProcessorChainBuilder.Build();

  Log.Logger = new LoggerConfiguration()
      .WriteTo.ApplicationInsights(telemetryConfiguration, TelemetryConverter.Traces)
      .CreateLogger();

  builder.Services.AddSingleton(telemetryConfiguration);
  builder.Services.AddSingleton(typeof(IAppLogger<>), typeof(AppLogger<>));
  
  // rest of the code...
 }

And below is the log I’m logging using AppLogger which uses Microsoft.Extension.Logging

_logger.LogInformation("Log message {@LogMessage}", new LogMessage { ApplicationName = ApplicationDetails.ApplicationName, MethodName = AzureFunctionNames.Function1, IngressEvent = inputMessage.Payload.EventBody });

it’s logging in application insight as serialised JSON of LogMessage, instead of logging in structured log format so that I should be able to query on each entity of LogMessage class.

What could be the reason that I am not able to see structured logs in application insights?