autofac - correct use in multi module application

Question

I'm working on an application that consists of many modules, with some having dependencies on other modules. I now decided to use Autofac to solve circular dependencies and improve the architecture in general.

To configure autofac I use the xml method (http://code.google.com/p/autofac/wiki/XmlConfiguration).

Now I am not sure on how to implement Autofac. Do I need to have a reference to autofac in each module in my application? Meaning that i have to register all components each time I want to solve a dependency...

ContainerBuilder builder = new ContainerBuilder();
builder.RegisterModule(new ConfigurationSettingsReader("autofac", configPath));
IContainer container = builder.Build();
IWhatever w = container.Resolve<IWhatever>();

Is this the way to do it?

Or is it better to Wrap Autofac in a separate Module ? With this approach I would have to register the modules only once (when the application starts) and could just use the wrapped Autofac to resolve dependencies...

IWhatever w = container.Resolve<IWhatever>();

I hope someone can tell me the best way to use Autofac.

thanks!

Answer 1

Each project need to have a dependency to the autofac core package if you would like to use autofac modules.

Use autofac modules as described here: http://autofac.readthedocs.io/en/latest/configuration/modules.html

Update

I describe why you should use modules here: http://www.codeproject.com/Articles/386164/Get-injected-into-the-world-of-inverted-dependenci