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POWhat exactly are the steps to auto inject Func<T>?
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  1. POWhat exactly are the steps to auto inject Func<T>?
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    copied!<p>I'm trying to set up a service class where I would like to inject a simple <code>Func&lt;OtherService&gt;</code> factory method in its constructor. Type <code>OtherService</code> is a class, which should be self-bound (and is indeed when I inject it without factory).</p> <p>I've installed the latest Ninject core, and Ninject.Extensions.Factory NuGet packages. When I try to retrieve an instance from Ninject, I get an activation exception about not being able to activate IntPtr.</p> <p>What am I doing wrong? If I understand correctly the documentation of the Factory extension, this type of Func binding should be automatic, without any configuration. Do I need to register the Factory extension anywhere, or create an explicit binding for <code>OtherService</code>? Any tips would be appreciated.</p> <p>EDIT:</p> <p>I have Ninject and Ninject.Extensions.Factory installed in a small separate project, where I do some customizations on Ninject. These are the following:</p> <pre><code>Kernel.Components.Add&lt;IInjectionHeuristic, CustomInjectionHeuristic&gt;(); Kernel.Components.Add&lt;IActivationStrategy, TransientDisposableActivationStrategy&gt;(); </code></pre> <p>where the two custom handlers are for letting me use my custom [Service] attribute for indicating property injection, and for handling disposing of components which use my own IDisposableEx interface (with Disposed notification) for Ninject cache fine tuning.</p> <pre><code>public class CustomInjectionHeuristic : NinjectComponent, IInjectionHeuristic, INinjectComponent, IDisposable { public bool ShouldInject(MemberInfo member) { return member.IsDefined(typeof(ServiceAttribute), true); } } public class TransientDisposableActivationStrategy : ActivationStrategy { public override void Activate(IContext context, InstanceReference reference) { var scope = context.GetScope(); // care about only transient scoped objects if (scope != null) return; if (reference.Instance is Component) reference.Instance.As&lt;Component&gt;().Disposed += (sender, args) =&gt; context.Kernel.Components.Get&lt;ICache&gt;().Clear(sender); if (reference.Instance is IDisposableEx) reference.Instance.As&lt;IDisposableEx&gt;().Disposed += (sender, args) =&gt; context.Kernel.Components.Get&lt;ICache&gt;().Clear(sender); } } </code></pre> <p>And I also use the Ninject.Extensions.NamedScope extension for InCallScope() bindings.</p> <p>Any of these customizations could have effect on proper work of the factory?</p> <p>EDIT2:</p> <p>I think I got it. The problem seems to be that I have to reference the Factory extension in my startup project, where I define bindings, and not in the class library where I have my basic Ninject setup. So the key is that I have to reference any binding-related extension in that project where I define the bindings. Anyway, sounds logical... </p>
 

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