Question

I have a httpHandler and using Unity 2 I would like to inject a dependency into my HttpHandler.

My code looks like:

public class MyHandler : BaseHandler
{

    public MyHandler()
    {
    }

    public IConfigurationManager Configuration
    {
        get;
        set;
    }

    ...
}

Using the web.config I would configure it like this (left out the rest of the config for simplicity) :

<type type="MyHandler">
   <typeConfig extensionType="Microsoft.Practices.Unity.Configuration.TypeInjectionElement, Microsoft.Practices.Unity.Configuration">
      <property name="Configuration" propertyType="IConfigurationManager">
        <dependency/>
      </property>
   </typeConfig>
</type>

How would I go about doing the same thing using fluent syntax? Everything I have tried so far leaves the property set to null when the handler fires.

Thanks

Answer 1

You have to call the ConfigureInjectionFor method.

myContainer.Configure<InjectedMembers>()
    .ConfigureInjectionFor<MyHandler>(
            new InjectionProperty("Configuration", 
                                  new ResolvedParameter<IConfigurationManager>())
                                 )
            )

EDIT:

Here is an example of Handler factory. It allow you to create your handler

 class HandlerFactory : IHttpHandlerFactory
    {
        public IHttpHandler GetHandler(HttpContext context, string requestType, String url, String pathTranslated)
        {
            return MyContainerProvider.Container.Resolve<MyHandler>();
        }
        public void ReleaseHandler(IHttpHandler handler)
        {
        }
        public bool IsReusable
        {
            get { return false; }
        }
    }

Then, you have to register the factory in your web application (to allow IIS to find it). You can find more details here.