How to define a Structuremap named instance in Code
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21-08-2019 - |
Question
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.
Solution
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 {}
OTHER TIPS
In the words of new syntax:
For<IEncryptionService>()
.AddInstances(x => { x.OfConcreteType<AdvancedEncryptionService>().Named("Advanced"); })
.Use<EncryptionService>();
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