How to define a Structuremap named instance in Code

问题

I want to create a Structuremap named instance in code, without config file

I want to be able to create the instance like this:

var namedInjector = ObjectFactory.GetNamedInstance<IInjectable>("Other");

I cant define such a type in code. I have found this sample but it uses the old syntax of a previous version and defines the named instance as:

.ForRequestedType<MementoType>()
.AddConcreteType<ConcreteType>(instanceName)

In the latest structuremap version there is no .AddConcreteType(instanceName) method which takes a instance name.

回答1:

I believe you need something like:

class MyRegistry : Registry {
    public MyRegistry() {
        this.ForRequestedType<IFoo>()
            .TheDefaultIsConcreteType<Bar>()
            .AddInstances( x => {
                x.OfConcreteType<Blap>().WithName("abc");
            });
    }
}
...
ObjectFactory.Configure(x=>x.AddRegistry<MyRegistry>());
IFoo test1 = ObjectFactory.GetInstance<IFoo>(); // Bar
IFoo test2 = ObjectFactory.GetNamedInstance<IFoo>("abc"); // Blap
...
interface IFoo {}
public class Bar : IFoo {}
public class Blap : IFoo {}

回答2:

In the words of new syntax:

            For<IEncryptionService>()
                .AddInstances(x => { x.OfConcreteType<AdvancedEncryptionService>().Named("Advanced"); })
                .Use<EncryptionService>();

来源：https://stackoverflow.com/questions/671418/how-to-define-a-structuremap-named-instance-in-code