Question

Using Unity Application block how can you force the Unity configuration to create a new instance of an object when we call the UnityContainer.Resolve<T>() method in WCF context?

Answer 1

Lifetime Manager in Unity is all what you need. By default, Unity use TransientLifetimeManager:

TransientLifetimeManager. For this lifetime manager Unity creates and returns a new instance of the requested type for each call to the Resolve or ResolveAll method. This lifetime manager is used by default for all types registered using the RegisterType, method unless you specify a different lifetime manager.

If you need to use another lifetime manager, just specify in Register method:

var container = new UnityContainer();
container.RegisterType<IMyType, MyType>(new PerResolveLifetimeManager());