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copied!<p>Unity inject dependencies when the class is resolved through Unity. A static class can not be created, so Unity can not inject dependencies.</p> <p>Instead of having a Static class, use Unity to resolve a pseudo-singleton class (<code>ContainerControlledLifetimeManager</code>) of ClassTwo. This way Unity injects <code>IClass</code> to <code>ClassTwo</code> when <code>ClassTwo</code> is created (resolved throug Unity container) and, as is configured as singleton, you always have the same instace of <code>ClassTwo</code> in the whole lifecicle of your application.</p> <p>You must resolve ClassTwo through Unity.</p> <pre><code>Container.RegisterType<IClass, ClassImplOne>("ImplOne"); Container.RegisterType<IClass, ClassImplTwo>("ImplTwo"); Container.RegisterType<InterfaceImplemetedByClassTwo, ClassTwo>(); //Simple example. Don't forget to use ContainerControlledLifetimeManager for ClassTwo to simulate sigleton. </code></pre> <p>And when you need ClassTwo:</p> <pre><code>Container.Resolve<InterfaceImplemetedByClassTwo> </code></pre> <p>Having the config in ClassTwo: </p> <pre><code>public class ClassTwo : InterfaceImplemetedByClassTwo { [Dependency("ImplOne")] //inject ClassImplOne public IClass SomeProperty { get; set; } </code></pre> <p>BUT this is not a great solution, I think your problem is with the phylosophy of DI. You need to cascade dependencies from the top layer classes of your app. Resolve the top layer classes in a explicit way. (<code>Container.Resolve</code>) and dependecies injection cascade down thanks to the magic of Unity. When 2 classes (top layer or not) need to use the same instance of <code>ClassTwo</code> Unity do the dirty work if you configured <code>ClassTwo</code> with <code>ContainerControlledLifetimeManager</code>.</p> <p>In other words, you don't need static class, you inject the same instance of a class in other classes than need it.</p>

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