UseAdaptiveSampling is not working for .net 4.6.2

[thegodofjason]

Hi
Following the document
https://learn.microsoft.com/en-us/azure/azure-monitor/app/sampling-classic-api#alternative-configure-adaptive-sampling-in-code

Created a .net 4.6.2 console project

And tested adaptive sampling with config is working fine

But when followed the document to use UseAdaptiveSampling, its not working anymore

Already disabled the config

And all of my code is in the below

using Microsoft.ApplicationInsights;
using Microsoft.ApplicationInsights.Extensibility;
namespace AppInsightsTest
{
    class Program
    {
        static void Main(string[] args)
        {
            TelemetryConfiguration config = TelemetryConfiguration.CreateDefault();
            config.ConnectionString = "XXX";
            var telemetryClient = new TelemetryClient(config);

            Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryProcessorChainBuilder builder = TelemetryConfiguration.Active.DefaultTelemetrySink.TelemetryProcessorChainBuilder;
            builder.UseAdaptiveSampling(maxTelemetryItemsPerSecond: 1);
            builder.Build();

            while(true)
            {
                telemetryClient.TrackTrace("test2");
            }
        }
    }
}