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Editorial Team
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Asked: 2026-05-16T16:38:40+00:00

i think this sounds like a stupid question. i am starting with caliburn micro

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i think this sounds like a stupid question. i am starting with caliburn micro: customizing the bootstraper. i have .NET Framework 4 installed, VS2010. but when i try to add a using, there is intellisense that tells me i have System.ComponentModel.Design but no Composition or any of

using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;
using System.ComponentModel.Composition.Primitives;

available. i tried to add a reference but cannot find System.ComponentModel in the list even

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1 Answer

  1. Editorial Team

    Do you have the Managed Extensibility Framework installed? MSDN says that System.ComponentModel.Composition is part of MEF.

    Assuming that MEF is already included in .NET 4, you will also need to add a reference to System.ComponentModel.Composition.dll to your project.

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