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我想獲得MEF獲得作用域在測試庫的.Net 4.7.1工作，我得到三個錯誤與下面的命令無法從「System.Reflection.Assembly轉換 - MEF作用域
var configuration = new ContainerConfiguration()
.WithAssembly(typeof(MefScope).Assembly, conventions);
哪裏MefScope是類，其中上述線路發生（第32行）
我得到的錯誤是
Error 7 Argument 1: cannot convert from 'System.Reflection.Assembly
[c:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\mscorlib.dll]' to
'System.Reflection.Assembly' D:\MyTest\___rc\PB\MyTest.Test\MefScope.cs 33 35 MyTest.Test
Error 6 The best overloaded method match for 'System.Composition.Hosting.ContainerConfiguration.WithAssembly(System.Reflection.Assembly, System.Composition.Convention.AttributedModelProvider)'
has some invalid arguments D:\MyTest\___rc\PB\MyTest.Test\MefScope.cs 33 21 MyTest.Test
和
Error 5 The type 'System.Reflection.Assembly' is defined in an assembly that is not referenced.
You must add a reference to assembly 'System.Reflection, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. D:\MyTest\___rc\PB\MyTest.Test\MefScope.cs 32 13 MyTest.Test
我假設這是某種DLL不匹配，但我不知道在哪裏System.Reflection，版本= 4.0.0.0是。也許我一起錯過了這一點。
難道某種靈魂會指向正確的方向。我需要使用.Net 4.5.1。