DependencyResolver Example

DependencyResolver.cs

public class DependencyResolver : IDependencyResolver
{
	private readonly SessionContainerManager _containerManager;

	public DependencyResolver(SessionContainerManager containerManager)
	{
		_containerManager = containerManager;
	}

	protected IUnityContainer ChildContainer
	{
		get
		{
			return _containerManager.GetContainer();
		}
	}

	public void DisposeOfChildContainer()
	{
		_containerManager.DisposeContainer();
	}

	private bool IsRegistered(Type typeToCheck)
	{
		var isRegistered = true;

		if (typeToCheck.IsInterface || typeToCheck.IsAbstract)
		{
			isRegistered = ChildContainer.IsRegistered(typeToCheck);

			if (!isRegistered && typeToCheck.IsGenericType)
			{
				var openGenericType = typeToCheck.GetGenericTypeDefinition();

				isRegistered = ChildContainer.IsRegistered(openGenericType);
			}
		}

		return isRegistered;
	}

	public object GetService(Type serviceType)
	{
		if (typeof(IController).IsAssignableFrom(serviceType))
		{
			return ChildContainer.Resolve(serviceType);
		}

		return IsRegistered(serviceType) ? ChildContainer.Resolve(serviceType) : null;
	}

	public IEnumerable<object> GetServices(Type serviceType)
	{
		if (IsRegistered(serviceType))
		{
			yield return ChildContainer.Resolve(serviceType);
		}

		foreach (var service in ChildContainer.ResolveAll(serviceType))
		{
			yield return service;
		}
	}
}