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POCastle Windsor IoC Container Instantiation for multiple concrete types
 

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  1. POCastle Windsor IoC Container Instantiation for multiple concrete types
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    <p>I am new to IoC and Castle Windsor.</p> <p>The question is more related to IoC, but i just chose Castle as my weapon of choice.</p> <p>I immediately ran into a problem that it seems impossible to construct the container from a config file or from a singleton.</p> <p>The only way seeming to work for me is to use a Builder function that will construct the whole container each time and then let me specify the types, look at this example:</p> <p>I have a view:</p> <pre><code>public interface IView { } </code></pre> <p>There are 2 concrete implementations of this view:</p> <pre><code>public class ConcreteViewA : IView { } public class ConcreteViewB : IView { } </code></pre> <p>I have a controller that operates on the view:</p> <pre><code>public class Controller { public Controller(IView view) { } public void Load() { } } </code></pre> <p>I create a function that constructs my IoC container and register the common types, the only type i can register is my controller, as this is all that stays the same:</p> <pre><code>WindsorContainer BuildContainer() { var container = new WindsorContainer(); container.Register(Component.For&lt;Controller&gt;().ImplementedBy&lt;Controller&gt;()); return container; } </code></pre> <p>I have 2 (Root) entry points:</p> <pre><code>void RootMethod1() { var container = BuildContainer(); container.Register(Component.For&lt;IView&gt;().ImplementedBy&lt;ConcreteViewA&gt;()); var controller = container.Resolve&lt;Controller&gt;(); controller.Load(); } void RootMethod2() { var container = BuildContainer(); container.Register(Component.For&lt;IView&gt;().ImplementedBy&lt;ConcreteViewB&gt;()); var controller = container.Resolve&lt;Controller&gt;(); controller.Load(); } </code></pre> <p>As you can see I have to rebuild the container each time as i need to tell it what to use for IView for each of the context i am in. What if the Container is expensive to rebuild (Lots of types etc), how can I design this?</p>
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    1. COIt this for an MVC application? If so, what does an instance of IView do?
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    2. COI ask because in an ASP.Net application picking which view should be returned for an Action on a Controller is dealt with by the framework.
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    3. CONo this is a custom implementation for winforms. The Page Load event will create the controller/presenter which takes in a view which is the current instance (so it cannot be created)
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