应该只有一个地方发生这种情况，您的容器不应该需要在组合根之外使用。

引用从以下链接的答案之一：

In practice,this means that you
should configure the container at the
root of your application.

• In a desktop app,that would be in the Main method (or very close to it)
• In an ASP.NET (including MVC) application,that would be in
  Global.asax
• In WCF,that would be in a ServiceHostFactory
• etc.

有一个很好的答复here这解释了一点更多。

参见this answer。