using System;

using Autofac;

​

​

public interface IOutput

{

    void Write(string content);

}

​

public class ConsoleOutput : IOutput

{

    public void Write(string content)

    {

        Console.WriteLine(content);

    }

}

​

public interface IDateWriter

{

    void WriteDate();

}

​

public class TodayWriter : IDateWriter

{

    private IOutput _output;

    public TodayWriter(IOutput output)

    {

        this._output = output;

    }

    public void WriteDate()

    {

        this._output.Write(DateTime.Today.ToShortDateString());

    }

}

​

public class WriterModule : Autofac.Module

{

    protected override void Load(ContainerBuilder builder)

    {

        builder.RegisterType<ConsoleOutput>().As<IOutput>();

        builder.RegisterType<TodayWriter>().As<IDateWriter>();

    }

}

​

public class Program

{

    private static IContainer Container{get;set;}

    public static void Main()

    {

        var builder = new ContainerBuilder();

        /*

        builder.RegisterType<ConsoleOutput>().As<IOutput>();

        builder.RegisterType<TodayWriter>().As<IDateWriter>();

        */

        builder.RegisterModule(new WriterModule());

        Container = builder.Build();

        WriteDate();

    }

    private static void WriteDate()

    {

        using(var scope =  Container.BeginLifetimeScope())

        {

            var writer = scope.Resolve<IDateWriter>();

            writer.WriteDate();

        }

    }

}