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copied!<p>To stay as close to your example code as possible, you can introduce yet another level of indirection in the form of an IViewPopulator:</p> <pre><code>public interface IViewPopulator { void Populate(IView view); } </code></pre> <p>You can now implement your SomeViewFactory like this:</p> <pre><code>public class SomeViewFactory : ISomeViewFactory { private readonly IViewPopulator populator; public SomeViewFactory(IViewPopulator populator) { if (populator == null) { throw new ArgumentNullException("populator"); } this.populator = populator; } public IView CreateView() { IView view = new SomeView(); this.populator.Populate(view); return view; } } </code></pre> <p>This separates the creation of Views and the population of ViewModels, adhering to the <a href="http://en.wikipedia.org/wiki/Single_responsibility_principle" rel="noreferrer">Single Responsibility Principle</a>. To a certain extent, it is also an example of <a href="http://blog.ploeh.dk/2010/02/02/RefactoringToAggregateServices.aspx" rel="noreferrer">Service Aggregation</a>.</p> <p>You can now implement IViewPopulator as a concrete type that takes normal dependencies:</p> <pre><code>public class SomeViewPopulator : IViewPopulator { private readonly IDependency dep; public SomeViewPopulator(IDependency dep) { if (dep == null) { throw new ArgumentNullException("dep"); } this.dep = dep; } public void Populate(IView view) { var vm = // Perhaps use this.dep to create an instance of IViewModel... view.ViewModel = vm; } } </code></pre> <p>There are likely to be other ways you could model the relationship between IView and IViewModel, but the above represents one possible solution.</p> <p>The key is to keep extracting abstractions until each have a well-defined responsibility. This exercise is really not about making code Container-agnostic at all, but eventually about adhering to SOLID principles.</p>

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