Where to place and configure IoC container in a WPF application?

Question

I am working on a middle sized WPF application (MVVM) that should be extensible and maintainable in the future. Thus I decided to use an IoC container (Unity in this case) t

Answer 1

As per new version of Unity container, we have to register it's own instance as well to get it in view models via constructor injection.

App.xaml.cs file:

protected override void OnStartup(StartupEventArgs e)
{
       var unityIoC = new UnityContainer();
       unityIoC.RegisterTypes(AllClasses.FromAssembliesInBasePath(), WithMappings.FromMatchingInterface, WithName.Default);
       unityIoC.RegisterInstance(typeof(IUnityContainer), unityIoC);
}

View Model class

[InjectionConstructor]
public MyViewModel(IUnityContainer container)
{
}

Now unity container would be available for us in view model and can be used to resolve.