I have next code:

public interface ISomething { }

public struct ConcreteSomething : ISomething { }

var container = new UnityContainer();
container.RegisterType(typeof(ISomething), typeof(ConcreteSomething));
var s = container.Resolve<ISomething>();

and it throws:

Resolution of the dependency failed, type = "ConsoleApplication1.ISomething", name = "(none)".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The type ConcreteSomething cannot be constructed. You must configure the container to supply this value.

So it it possible to bind a struct to an interface in Unity?

I assume Unity only supports class binding as according to Registering an Interface or Class Mapping to a Concrete Type:

"This is the most common scenario for dependency injection using Unity. It involves registering a mapping between types such as an interface or a base class and a corresponding concrete class that implements or inherits from it."

Noel Angelo Bolasoc
Global Technologies and Solutions
Avanade, Inc.
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