Multiple interfaces binded to a single class

Question

I have these 3 interfaces:

interface IA {}
interface IB {}
interface IC {}

Also, I've this other interface which inherits from IA, IB and IC:

interface II : IA, IB, IC {}

Then, I've also created a class CC inherits from II:

class CC : II {}

I've created these bindings:

this.Bind<IA>().To<CC>().InSingletonScope();
this.Bind<IB>().To<CC>().InSingletonScope();
this.Bind<IC>().To<CC>().InSingletonScope();
this.Bind<II>().To<CC>().InSingletonScope();

I don't know if, each time I've to request for a whichever interface, NInject kernel is going to give the same singleton instance of CC.

So, I mean:

IA ia = kernel.Get<IA>();
IB ib = kernel.Get<IB>();

ia is the same instance that ib?

How could I get this behavior?

Possible duplicate of [Binding singleton to multiple services in Ninject](https://stackoverflow.com/questions/3147996/binding-singleton-to-multiple-services-in-ninject) — BatteryBackupUnit, Oct 18 '17 at 05:24
the difference to [your question from almost exactly one year ago](https://stackoverflow.com/questions/40125455/ninject-bind-multiple-types-to-the-same-singleton-instance) is minute. — BatteryBackupUnit, Oct 18 '17 at 05:29

score 4 · Accepted Answer · answered Oct 16 '17 at 13:14

4

As far as I know, this should work :

this.Bind<IA, IB, IC, II>().To<CC>().InSingletonScope();

The overload of Bind takes up to four type parameters.

answered Oct 16 '17 at 13:14

jbl

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And if four is not enough, there is always `Bind(params Type[] services)`. – Andreas Appelros Oct 17 '17 at 07:06

Multiple interfaces binded to a single class

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