如何使用MEF依赖注入提供程序？ [英] How do I dependency inject providers using MEF?

问题描述

我认为可以编写以下代码：

I thought it would be possible to write the following code:

[Export]
public class ClassA
{
}

public class ClassB
{
  private readonly Func<ClassA> classAProvider;

  [ImportingConstructor]
  public ClassB(Func<ClassA> classAProvider)
  {
    this.classAProvider = classAProvider;
  }

  public ClassA CreateClassA()
  {
    return classAProvider();
  }
}

能帮我弄清楚如何为<$ c注入提供商$ c> ClassA 进入 ClassB ？我注意到 ExportFactory ，但我不喜欢我必须处理它的事实。

Can you please help me figure out how I can inject a provider for ClassA into ClassB? I have noticed ExportFactory, but I don''t like the fact that I have to dispose it.

推荐答案

请看一下，这里给出了完美的例子： http://blogs.msdn.com/b/brada/archive/2008/09/29/simple-introduction-to-composite-applications-with-the-managed -extensions-framework.aspx [ ^ ]

http://davesbox.com/archive/2008/06/05/dependency-injection-in- the-managed-extensibility-framework-simple-injection.aspx [ ^ ]

Please take a look, perfect example is given over here :http://blogs.msdn.com/b/brada/archive/2008/09/29/simple-introduction-to-composite-applications-with-the-managed-extensions-framework.aspx[^]
http://davesbox.com/archive/2008/06/05/dependency-injection-in-the-managed-extensibility-framework-simple-injection.aspx[^]

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