automatically build the container about autofac.annotation HOT 4 CLOSED

using Autofac;
using Autofac.Annotation;
using Domain.Repository;
using Infrastructure.Data.Repository;
using InfrastructureMongo.Repository;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace Context
{
    public sealed class ApplicationContext
    {
        private static IContainer container;

        private ApplicationContext()
        {
            //build();

             autodiscovery();
        }

        private void autodiscovery()
        {
            var builder = new ContainerBuilder();
            List<Assembly> loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().ToList();
            var loadedPaths = loadedAssemblies.Select(a => a.Location).ToArray();
            var referencedPaths = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, "*.dll");
            var toLoad = referencedPaths.Where(r => !loadedPaths.Contains(r, StringComparer.InvariantCultureIgnoreCase)).ToList();
            toLoad.ForEach(
                path => {
                    try {
                        loadedAssemblies.Add(AppDomain.CurrentDomain.Load(AssemblyName.GetAssemblyName(path)));
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e);
                    }
                }
            );
            builder.RegisterModule(new AutofacAnnotationModule(loadedAssemblies.ToArray()));

            container = builder.Build();
        }

        public IContainer getContainer()
        {
            return container;
        }

        public static ApplicationContext Instance { get { return Nested.instance; } }

        private class Nested
        {
            static Nested()
            {
            }

            internal static readonly ApplicationContext instance = new ApplicationContext();
        }
    }
}