Autofac解析IEnumerable <TComponent>僅用於實例化的項目

Question

autofac是否提供了一種獲取組件的所有「活動」實例的方法？ 所以，下面的工作：

public class ViewManager { 

    public ViewManager(Func<IEnumerable<MyView>> viewProvider, Func<string, MyView> viewFactory) { 
     ViewProvider = viewProvider; 
     ViewFactory = viewFactory; 
    } 

    public Func<IEnumerable<MyView>> ViewProvider { get; private set; } 
    public Func<string, MyView> ViewFactory { get; private set; } 

    public MyView GetView(string viewId) { 
     var existing = from view in ViewProvider() //this would get me all the active views (not the available implementations) 
         where !view.IsDisposed 
          && view.Id == viewId 
         select view; 
     return existing.FirstOrDefault() ?? ViewFactory(viewId); 
    } 
} 

public class MyView: IDisposable { 
    public MyView(string id) { 
     Id = id; 
    } 
    public string Id { get; private set; } 
    public bool IsDisposed { get; private set; } 
    public void Dispose() { 
     IsDisposed = true; 
    } 
} 

Answer 1

不出來我怕箱子 - 你需要想出這個方案的另一個方案。您可能能夠使用OnActivated()和OnRelease()活動，以保持自己的積極看法註冊表：

builder.RegisterType<ViewRegistry>() 
    .As<IViewRegistry>() 
    .SingleInstance(); 

builder.RegisterType<MyView>() 
    .OnActivated(e => 
    e.Context.Resolve<IViewRegistry>().Add(e.Instance)) 
    .OnRelease(e => { 
    e.Instance.Dispose(); 
    e.Context.Resolve<IViewRegistry>().Remove(e.Instance)) 
    });