.net core console app using SeriLog to log to file with config in json file

1. add the packages

* don't need serilog.sinks.console if just logging to file / or not using serilog console (can use standard console logger Microsoft.Extensions.Logging.Console)

2. when the app starts call a setup method to configure everything (need something similar when/if setting up dependancy injection)

2a. in the configuration method, create a config (IConfigurationRoot) based on the json file

2b. pass the config into the configuration of the serilog

2c. add the serilog to the services

* you only need the AddSerilog line. The console lines adds console logging, the addconfiguration line applies configuration for the console logging but doesn NOT effect serilog

3. add a json file to the project

3a. ensure copy local is set so file goes with exe to output directory
Properties -> Copy to Output Directory -> Copy if newer

3b. configure serilog

Entire Program class

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Hello, starting processing");

            var serviceProvider = ConfigureServices(new ServiceCollection());

                                  

            var core = serviceProvider.GetService<Core>();

            core.Process();

            Console.WriteLine("Done, press enter to exit");

            Console.Read();

        }

        private static IServiceProvider ConfigureServices(IServiceCollection services)

        {

            // add in our config file

            var builder = new ConfigurationBuilder()

                .SetBasePath(Directory.GetCurrentDirectory())

                .AddJsonFile("appsettings.json");

            var config = builder.Build();

           

            // serilog configuration

            Log.Logger = new LoggerConfiguration()

                .ReadFrom.Configuration(config)

                .CreateLogger();

            services.AddSingleton(typeof(IConfigurationRoot), config); // add our config to the services collection

            services.AddSingleton<IChangeLogService, ChangeLogService>();

            services.AddSingleton<IFormsToolKitService, FormsToolKitService>();

            services.AddSingleton<IFormsToolKitPdfService, FormsToolKitPdfService>();

            services.AddSingleton<ISendMailService, SendMailService>();

            services.AddSingleton(typeof(ILogger<>), typeof(Logger<>));

            services.AddSingleton<ILoggerFactory, LoggerFactory>(); // kinda probably don't need this as we have the above line

            services.AddLogging(configure => configure.AddConsole()

                .AddSerilog()

                .AddConfiguration(config.GetSection("Logging"))

            );

            services.AddTransient<Core>();

            var serviceProvider = services.BuildServiceProvider();

            return serviceProvider;

        }

    }