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copied!<p>A 'module' feature is deliberately left out of the Simple Injector core library, but there is a <a href="https://nuget.org/packages/SimpleInjector.Packaging" rel="nofollow noreferrer">SimpleInjector.Packaging NuGet package</a> that allows you to do this. 'Package' is the term Simple Injector uses. This library however, is nothing more than one <code>IPackage</code> interface and two extension methods. You can achieve the same by writing code like this:</p> <p>A package:</p> <pre class="lang-cs prettyprint-override"><code>public static class BootstrapperPackage { public static void RegisterServices(Container container) { container.Register<IBar, Bar>(Lifestyle.Scoped); container.Register<IFoo, Foo>(Lifestyle.Singleton); } } </code></pre> <p>In your composition root:</p> <pre class="lang-cs prettyprint-override"><code>public static void Main(string[] args) { var container = new SimpleInjector.Container(); BootstrapperPackage.RegisterServices(container); ... } </code></pre> <p>The difference with the <a href="https://nuget.org/packages/SimpleInjector.Packaging" rel="nofollow noreferrer">SimpleInjector.Packaging NuGet package</a> is that this package defines an interface for you, and allows you to dynamically load multiple packages in one single line:</p> <pre><code>public class BusinessLayerPackage : IPackage { public void RegisterServices(Container container) { container.Register<IBar, Bar>(Lifestyle.Scoped); container.Register<IFoo, Foo>(Lifestyle.Singleton); } } public static void Main(string[] args) { var container = new SimpleInjector.Container(); container.RegisterPackages(AppDomain.CurrentDomain.GetAssemblies()); } </code></pre> <p>However, if you don't really need dynamic loading, using static methods (as shown above) is preferred, because it has the following advantages:</p> <ul> <li>Makes loading modules very explicit and discoverable.</li> <li>Makes it easy to select which modules to load and which not.</li> <li>Makes it easy to pass along extra values to the <code>RegisterServices</code> methods, such as configuration values that such module requires. This prevents the module from taking a hard dependency on the configuration system.</li> </ul> <p>For more information, please read <a href="https://simpleinjector.org/howto#package-registrations" rel="nofollow noreferrer">this</a>.</p>

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