unity-container

I am finally getting my feet wet with Dependency Injection (long overdue); I got started playing with Unity and run into an issue with the strategy pattern. I can use the container to return to me specific implementations of a strategy based on a name, but what I don't see is how I am supposed to get the right strategy in the context. Let's illustrate on a simple example: the context is a car, which has an IEngine (the strategy), with 2 implementations, FastEngine and SlowEngine. The code would look along these lines: public interface IEngine { double MaxSpeed { get; } } internal class

I meet one problem that i can't solve now. I have the following: UnityHelper.DefaultContainer.RegisterInstance(typeof(IMyInterface), "test", instance); where UnityHelper.DefaultContainer is my helper for getting unity container with loaded configuration. here I registered instance as an instance of IMyInterface . So anywhere( some time after using) I want to remove this mapping. Remove it at all. How I can do it? I have tried: UnityHelper.DefaultContainer.Teardown(instance) but is was unsuccessful and the following code returns instance anyway: UnityHelper.DefaultContainer.ResolveAll

Can Unity automatically resolve IEnumerable<T> ? Let's say I have a class with this constructor: public CoalescingParserSelector(IEnumerable<IParserBuilder> parserBuilders) and I configure individual IParserBuilder instances in the container: container.RegisterType<IParserSelector, CoalescingParserSelector>(); container.RegisterType<IParserBuilder, HelpParserBuilder>(); container.RegisterType<IParserBuilder, SomeOtherParserBuilder>(); can I make this work without having to implement a custom implementation of IEnumerable<IParserBuilder> ? var selector = container.Resolve<IParserSelector>(); So

I'm using Unity for Dependencies Injection and using Identiy Provider to manage the user login, register, email confirmation, etc. When I try to register a user, I have this problem: The current type, Microsoft.Owin.Security.IAuthenticationManager, is an interface and cannot be constructed. Are you missing a type mapping? I have no idea how to register this Interface (IAuthenticationManager) in my Unity container. I tried registering the interface with this code, but if I put it, I have other problem: No IUserTokenProvider is registered. container.RegisterType<HttpContextBase>( new

I am working on a project where the Unity framework is used as the IoC container. My question relates to injecting an optional dependency (in this case a logger) into several classes using property- or setter injection. I do not want to clutter the constructors of all my classes with these optional dependencies, but I cannot find a good way to handle this in Unity. The way you would do this is, according to the MSDN documentation , by adding an attribute to the property: private ILogger logger; [Dependency] public ILogger Logger { get { return logger; } set { logger = value; } } I find this

Has anyone had any success running using an IoC container to inject dependencies into ASP.NET WebAPI controllers? I cannot seem to get it to work. This is what I'm doing now. In my global.ascx.cs : public static void RegisterRoutes(RouteCollection routes) { // code intentionally omitted } protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterGlobalFilters(GlobalFilters.Filters); RegisterRoutes(RouteTable.Routes); IUnityContainer container = BuildUnityContainer(); System.Web.Http.GlobalConfiguration.Configuration.ServiceResolver.SetResolver( t => { try { return

For example I have dependency: public interface IMyDependency { } public class MyDependency : IMyDependency { } That injects in MyClass object: public interface IMyInterface { } public class MyClass : IMyInterface { [Dependency] public IMyDependency MyDependency { get; set; } } Also I have a Factory, that creates MyClass instance: public interface IFactory { IMyInterface CreateMyObject(); } public class Factory : IFactory { public IMyInterface CreateMyObject() { // some checks before creation // for. ex check if this type of object supported by OS and thow exception if not return new MyClass()