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    copied!<p>while awaiting some C# genius to come along with the answer to all my problems I have implemented the trick that IEnumerable also uses:</p> <p>I added a method <code>public IDescribedEnumerable&lt;IDescribedModel&gt; AsIDescribedModels()</code> to the IDescribedEnumerable interface and created a new class <code>GenericDescribedEnumerable&lt;T&gt; : IDescribedEnumerable&lt;IDescribedModel&gt;</code>. In my <code>DescribedEnumerable&lt;T&gt;</code> class I create a GenericDescribedEnumerable and return that. In the GenericDescribedEnumerable I return <code>this</code></p> <p>in full code:</p> <pre><code>public interface IDescribedModel&lt;T&gt; : IDescribedModel{ T original { get; } } public interface IDescribedEnumerable { IDescribedEnumerable&lt;IViewModel&gt; AsIViewModels(); } public interface IDescribedEnumerable&lt;T&gt; : IDescribedEnumerable where T : IDescribedModel{ IEnumerable&lt;T&gt; GetViewModels(); } public class DescribedEnumerable&lt;T&gt; : IDescribedEnumerable&lt;IDescribedModel&lt;T&gt;&gt;{ public DescribedEnumerable(IEnumerable&lt;T&gt; enumerable) {} public IDescribedEnumerable&lt;IViewModel&gt; AsIViewModels() { return new GenericDescribedEnumerable&lt;T&gt;(/*allProperties*/); } public IEnumerable&lt;T&gt; GetViewModels() { foreach ( T obj in _enumerable ) { var vm = new DescribedModel&lt;T&gt;( obj); yield return vm; } } } public class GenericDescribedEnumerable&lt;T&gt; : IDescribedEnumerable&lt;IViewModel&gt;{ //pass in the constructor everything you need, or create in the //constructor of DescribedEnumerable&lt;T&gt; public GenericDescribedEnumerable(/*allProperties*/) { } public IEnumerable&lt;IViewModel&gt; GetViewModels() { foreach ( T obj in _enumerable ) { var vm = new PlatoViewModel&lt;T&gt;( obj ); yield return vm; } } public IDescribedEnumerable&lt;IViewModel&gt; AsIViewModels() { return this; } } </code></pre>
 

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