Unity Resolve Multiple Classes

问题:

How do I get microsoft unity to 'construct' a list of classes for a given interface type.

Very Simple example:

  List<IShippingCalculation> list = new List<IShippingCalculation>();   list.Add(new NewYorkShippingCalculation());   list.Add(new FloridaShippingCalculation());   list.Add(new AlaskShippingCalculation());    //Not What I want   public void calcship(List<IShippingCalculation> list)   {     var info = new ShippingInfo(list);     info.CalculateShippingAmount(State.Alaska)   }    //Somehow in unity, must i do this for all the concrete classes?    //how does it know to give a list.   Container.RegisterType<IShippingInfo,new AlaskaShippingCalculation()>();??    //What I want   public void calcship(IShippingInfo info)   {     info.CalculateShippingAmount(State.Alaska)   } 

Thankyou!

回答1:

If you are using Unity 2 you can use ResolveAll<T>

Container.RegisterType<IShippingInfo,FloridaShippingCalculation>("Florida"); Container.RegisterType<IShippingInfo,NewYorkShippingCalculation>("NewYork"); Container.RegisterType<IShippingInfo,AlaskaShippingCalculation>("Alaska");  IEnumerable<IShippingInfo> infos = Container.ResolveAll<IShippingInfo>(); 

You have to give a name to every registration because ResolveAll will only return named registrations.

回答2:

You do not need to have the container as parameter, register the concrete types with names as said above, then in the constructor add a array as parameter, IList or generic Enum does not work.

public MyConstructor(IMyType[] myTypes) 

文章来源: Unity Resolve Multiple Classes