Serilog Property Filtering Test

FilteringTest.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.2</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Serilog" Version="2.8.0" />
    <PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
    <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />
  </ItemGroup>
</Project>

Program.cs

using System;
using System.Threading;
using System.Threading.Tasks;

using Serilog;
using Serilog.Core;
using Serilog.Events;

// Filter out ThreadId=1 from logs (or any other property with a specified value)
// https://github.com/serilog/serilog-enrichers-thread/issues/15#issuecomment-518406791

namespace SerilogTests {
    class DefaultPropertyValueRemover : ILogEventEnricher {
        readonly string _propertyName;
        readonly ScalarValue _targetValue;

        public DefaultPropertyValueRemover(string propertyName, object targetValue) {
            _propertyName = propertyName;
            _targetValue = new ScalarValue(targetValue);
        }

        public void Enrich(LogEvent le, ILogEventPropertyFactory _) {
            if (le.Properties.TryGetValue(_propertyName, out var val) && _targetValue.Equals(val)) {
                le.RemovePropertyIfPresent(_propertyName);
            }
        }
    }

    class Program {
        static void DoStuffInBackground(object stateInfo) {
            Log.Information("Hello from the background!");
        }

        static void Main(string[] args) {
            Log.Logger = new LoggerConfiguration()
                .WriteTo.Console(outputTemplate: "[{Level:u3}] {Message:lj} {Properties}{NewLine}")
                .Enrich.WithThreadId()
                .Enrich.With(new DefaultPropertyValueRemover("ThreadId", 1))
                .CreateLogger();

            Log.Information("Hello, Serilog!");

            ThreadPool.QueueUserWorkItem(DoStuffInBackground);
            Thread.Sleep(250); // "Work" "very hard" on the main thread :)

            Log.Information("Hello from the foreground again!");
        }
    }
}

Result.txt

$ dotnet run
[INF] Hello, Serilog! {}
[INF] Hello from the background! {ThreadId=4}
[INF] Hello from the foreground again! {}