Unity constructor injection with other parameter

Question

I have a class with a constructor that looks like the following:

public BatchService(IRepository repository, ILogger logger, string user)

I

Answer 1

You can use ParameterOverride:

BatchService batchService = 
DIContainer.Resolve<BatchService>(new ParameterOverride("user", valueForUser));

Answer 2

Please don't abuse Unity as a ServiceLocator.

If you want to create objects that need runtime parameters use a factory. You can even drop the act of implementing that factory by either using the Unity version of Typed Factories or let Unity generate factory delegates for you.

Answer 3

First of all it's not good idea mix ILogger with business logic. You can create ILogger directly in BatchService or resolve thru [Dependency] attribute. DI it's not panacea, business object creation shouldn't depend from ILogger

Use new InjectionParameter<string>("user") Take a look please Registering Injected Parameter and Property Values for more details