ISEbd-21_Tomasheva_RoadTrain_Base/RoadTrain/RoadTrain/Program.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Serilog;


namespace RoadTrain
{
    internal static class Program
    {
        /// <summary>
        ///  The main entry point for the application.
        /// </summary>
        [STAThread]

        static void Main()
        {
            // To customize application configuration such as set high DPI settings or default font,
            // see https://aka.ms/applicationconfiguration.
            ApplicationConfiguration.Initialize();
            var services = new ServiceCollection(); 
            ConfigureServices(services);
            using (ServiceProvider serviceProvider = services.BuildServiceProvider())
            {
                Application.Run(serviceProvider.GetRequiredService<FormMapWithSetRoadTrains>()); 
            }
        }

        private static void ConfigureServices(ServiceCollection services)
        { 
            services.AddSingleton<FormMapWithSetRoadTrains>()
                .AddLogging(option => 
                {
                    var configuration = new ConfigurationBuilder()
                    .SetBasePath(Directory.GetCurrentDirectory())
                    .AddJsonFile(path: "appsettings.json", optional: false, reloadOnChange: true)
                    .Build();

                    var logger = new LoggerConfiguration()
                        .ReadFrom.Configuration(configuration)
                        .CreateLogger();

                    option.SetMinimumLevel(LogLevel.Information);
                    option.AddSerilog(logger);
                }); 
        }
    }
}