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copied!<p>The interesting part of your question to me is: how to use service locator functions (such as spring.net's <code>IApplicationContext.GetObjectsOfType(...)</code>) from within your library, without introducing a dependency on a specific IoC container.</p> <p>As stated in the question, this is useful, because we want to build libraries that do not force the consumer to use a specific IoC container. However, we still want to use <em>an</em> IoC container, because it eases the development of our library. This dilemma is nicely described by Jeremy Miller in the post <a href="http://codebetter.com/jeremymiller/2008/08/16/it-s-time-for-ioc-container-detente/" rel="nofollow">"It’s time for IoC Container Detente"</a>.</p> <p>His blog post has led to a <a href="http://commonservicelocator.codeplex.com/" rel="nofollow">small project on codeplex called CommonServiceLocator</a>. This project specifies an <a href="http://commonservicelocator.codeplex.com/SourceControl/changeset/view/27688#332676" rel="nofollow">IServiceLocator interface</a> for service location, that is implemented by many popular IoC containers, including Spring.NET.</p> <p>The <code>IServiceLocator</code> defines a <code>IEnumerable<TService> GetAllInstances<TService>();</code> method, which basically is what is asked for in your question.</p> <p>When your library needs service locator functionality, you can take a dependency on the CommonServiceLocator library and you and other consumers can wire it up using your IoC container of choice.</p> <p>And guess what: Spring.NET adapter implements <code>IEnumerable<TService> GetAllInstances<TService>();</code> using <code>GetObjectsOfType(serviceType);</code>.</p>

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