Prism MEF导出/导入问题[已解决] [英] Prism MEF Export / Import Problem [SOLVED]

问题描述

我正在尝试将类的现有实例注入到我的视图中，但是该视图仅接收到我的类的默认实例.
这是我在视图模型类中的导出

I´m trying to inject an existing instance of a class into my view, but the view only receive a default instance of my class.
Here is my export in a view model class

[Export("BLA", typeof(vmObject))]
       public vmObject VMObject
       {
           get
           {
               return vmObject;
           }
           set
           {
               if (value != vmObject)
               {
                   vmObject = value;
                   this.RaisePropertyChanged<vmObject>(() => this.VMObject);
               }
           }
       }

根据需要，我的视图模型将加载另一个应接收导出类的视图.我已经检查了类vmObject是否已按预期初始化

On demand, my view model loads another view which should receive the exported class. I already have checked that class vmObject has been initialized as expected

tRegionManager.RequestNavigate("vInfoAuthorizationField", new Uri("/vInfoAuthorizationField", UriKind.Relative));

我的导入:

My import:

[Import("BLA", AllowRecomposition = true, AllowDefault = false)]
        public vmObject VMObject { get; set; }

我该如何解决?


更新

我可以自己解决问题

我在引导程序中添加了以下行

How can I fix this?


Update

I could solve the problem by myself

I added the following line to the bootstrapper

this.Container.ComposeExportedValue(this.Container);

之后，我可以将CompositionContainer导入到我的视图模型中，以下方法解决了导入/导出问题

After that, I could import the CompositionContainer into my view model and following method solved the import / export problem

this.container.ComposeExportedValue("BLA",this.VMObject);

推荐答案

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