Application Insights Log User Agent

    public class UserAgentTelemetryInitializer(IHttpContextAccessor httpContextAccessor) : ITelemetryInitializer
    {
        public void Initialize(ITelemetry telemetry)
        {
            var context = httpContextAccessor.HttpContext;
            var userAgent = context?.Request?.Headers["User-Agent"].ToString();
            if (!string.IsNullOrEmpty(userAgent))
            {
                if (telemetry is ISupportProperties t)
                {
                    t.Properties["User-Agent"] = userAgent;
                }
            }
        }
    }


...
            builder.Services.AddHttpContextAccessor();
            builder.Services.AddSingleton<ITelemetryInitializer, UserAgentTelemetryInitializer>();
            builder.Services.AddApplicationInsightsTelemetry(options =>
            {
                options.ConnectionString = connectionString;
            });
...