Autofac is an addictive Inversion of Control container for .NET 4.5, Silverlight 5, Windows Store apps, and Windows Phone 8 apps
Source: http://autofac.org/
Dependency Injection in C# with Autofac - real world example
using Autofac;
using System;
using System.Linq;
using System.Collections.Generic;
using System.Windows.Forms;
namespace WindowsFormsApplication4
{
public class Programmer
{
public string Name { get; set; }
public IList<string> Skills { get; set; }
}
public class Project
{
public string Name { get; set; }
readonly IList<Programmer> _programmers;
readonly IDispatcher _dispatcher;
public Project(IList<Programmer> programmers, IDispatcher dispatcher)
{
_programmers = programmers;
_dispatcher = dispatcher;
}
public void FindProgrammers()
{
var programmers = _programmers.Where(e => e.Skills.Contains("VB"));
foreach (var p in programmers)
_dispatcher.Notify(p);
}
}
public interface IDispatcher
{
void Notify(Programmer programmer);
}
public class Email : IDispatcher
{
private readonly string _message;
public Email(string message)
{
_message = message;
}
public void Notify(Programmer programmer)
{
Console.WriteLine("Sent message {0} to {1}", _message, programmer.Name);
}
}
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
List<Programmer> lst = new List<Programmer>();
Programmer p = new Programmer();
p.Name = "Dan";
p.Skills = new List<string>();
p.Skills.Add("VB");
lst.Add(p);
Email email = new Email("Notification email message");
ContainerBuilder autofac = new ContainerBuilder();
autofac.Register(o => new Project(o.Resolve<IList<Programmer>>(), o.Resolve<IDispatcher>()));
autofac.RegisterType<Email>().As<IDispatcher>();
autofac.RegisterInstance(lst).As<IList<Programmer>>();
autofac.RegisterInstance(email).As<IDispatcher>();
using (var container = autofac.Build())
{
container.Resolve<Project>().FindProgrammers();
}
}
}
}
