Autofac: Reference from a SingleInstance'd type to a HttpRequestScoped

Posted by Michael Wagner on Stack Overflow See other posts from Stack Overflow or by Michael Wagner
Published on 2010-04-08T11:58:33Z Indexed on 2010/04/08 14:13 UTC
Read the original article Hit count: 317

Filed under:

autofac

|

scope

|

ASP.NET

I've got an application where a shared object needs a reference to a per-request object.

Shared:      Engine
                |
Per Req:  IExtensions()
                |
             Request

If i try to inject the IExtensions directly into the constructor of Engine, even as Lazy(Of IExtension), I get a "No scope matching [Request] is visible from the scope in which the instance was requested." exception when it tries to instantiate each IExtension.

How can I create a HttpRequestScoped instance and then inject it into a shared instance?

Would it be considered good practice to set it in the Request's factory (and therefore inject Engine into RequestFactory)?

© Stack Overflow or respective owner

Related posts about autofac

Autofac Wcf Integration Security Problem

as seen on Stack Overflow - Search for 'Stack Overflow'
I've created a Wcf Service to back a Ajax page (.Net 3.5). It's hosted in IIS 6.1 Integrated Pipeline. (The rest of Autofac is setup correctly for Web Forms integration). Everything works fine and dandy with the normal Wcf pipeline. However when I plug in the Autofac Wcf Integration (as per the… >>> More
Dependency Injection in ASP.NET Web API using Autofac

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
In this post, I will demonstrate how to use Dependency Injection in ASP.NET Web API using Autofac in an ASP.NET MVC 4 app. The new ASP.NET Web API is a great framework for building HTTP services. The Autofac IoC container provides the better integration with ASP.NET Web API for applying dependency… >>> More
Can't get autofac to resolve type that, apparently, is registered

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, Has stated on the title, I'm trying to get autofac to resolve a type, that, as seen on the image bellow, seems registered. Any thoughts on why the exception? Thanks >>> More
Resolve dependency with autofac based on constructor parameter attribute

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using AutoFac. I want to inject a different implementation of a dependency based on an attribute I apply to the constructor parameter. For example: class CustomerRepository { public CustomerRepository([CustomerDB] IObjectContainer db) { ... } } class FooRepository { public FooRepository([FooDB]… >>> More
Autofac

as seen on C# Source - Search for 'C# Source'
A .NET IoC container written in C#. Focus on programmatic configuration with builder syntax. Zero intrusion into existing code. Create components using reflection or with lambda expressions for unlimited flexibility. Managed disposal of any IDisposable components created by the container within a… >>> More

Related posts about scope

AngularJS on top of ASP.NET: Moving the MVC framework out to the browser

as seen on Simple Talk - Search for 'Simple Talk'
Heavily drawing inspiration from Ruby on Rails, MVC4’s convention over configuration model of development soon became the Holy Grail of .NET web development. The MVC model brought with it the goodness of proper separation of concerns between business logic, data, and the presentation logic. However… >>> More
Class scope variable vs method scope variable

as seen on Stack Overflow - Search for 'Stack Overflow'
I know that variable scope is enclosed by a start of block { and an end of block }. If the same variable is declared within the block, then the compile error Variable already defined occurs. But take a look at following example. public class Test{ int x=0;// Class scope variable public void m(){ … >>> More
ngGrid reusable filter AngularJS

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a business requirement that I filter a boolean value in my ngGrid. The filter has three states: only true, only false and both. Filtering like this seems to be a common enough use case that I should refactor that functionality out of my code for re use (possibly in a directive/filter?). I'd… >>> More
Is Context.Items user scope or application scope?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi every one! I want to use Context.Items to store some info of a User Control like: Context.Items["Data"] = 5; I want to know, Is Context.Items is for each request or it is global for the application? >>> More
Modifying a HTML page to fix several "bugs" add a function to next/previous on a option dropdown

as seen on Stack Overflow - Search for 'Stack Overflow'
SOF, I've got a few problems plaguing me at the moment and am wondering if anyone could assist me with them. I'm trying to get Next Class | Previous Class to act as buttons so that when Next Class is clicked it will go to the next item in the dropdown list and for previous it would go to back one… >>> More