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I inherited a C# Visual Studio 2010 project that I am unable to compile because it’s looking the following reference which I am unable to satisfy.

using Microsoft.VisualStudio.Tools.Applications.Runtime;

I am new to VS but from what I have researched it has something to do with the version Microsoft Office and the .Net framework version. I currently have MS Office 2003 installed (with Project 2010 and Visio 2010). The Solution requires .Net 4.0 but from what I found on the web it looks like MS Office is reverting .Net to an earlier version.

When I type in using Microsoft. Intellisense only shows

  • {}Contract
  • {}CSharp
  • {}Internal
  • {}SqlServer
  • {}VisualBasic
  • {}Win32

So I am missing the {}VisualStudio resource.

Thanks.

Nasreddine
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Chad
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    You said your project is in VS 2010, but make sure you are pointing to the right FWK version as explained [here](http://stackoverflow.com/questions/3293317/where-is-the-microsoft-visualstudio-testtools-unittesting-namespace-on-vs2010). – Gabe Thorns Oct 27 '11 at 21:01
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    See [this](http://stackoverflow.com/questions/858877/finding-references-in-visual-studio). – Mojtaba Pourmirzaei Oct 27 '11 at 20:59
  • @Gabobcat sorry I read your comment after posting what worked for me. – Jeremy Thompson Mar 06 '12 at 04:40

5 Answers5

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I get the same error message but I was referencing:

using Microsoft.VisualStudio.TestTools.UnitTesting;

The solution for me was changing the target of .Net 4 CLIENT framework to .Net 4.0 FULL framework.

David Heffernan
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Jeremy Thompson
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You seem to need

Visual Studio 2010 Tools for Office Runtime

I also refer you to docs in case you need further info:

Nikola Radosavljević
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You need to add a reference to the assembly before you can refer to the namespace with a using directive. Right-click on the project's "References" item in Solution Explorer, select "Add reference" and then pick the Microsoft.VisualStudio.Tools.Applications.Runtime assembly - in the version of VS2010 with the extensions I'm using, it's in the "Extensions" part of the "Assemblies" tab, but that may well be due to the productivity extension I'm using. Either way, you should be able to find it somewhere there....

Jon Skeet
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As it is an inherited project I'm assuming that the references are all properly in place and you're just missing the runtime required for this namespace.This namespace is part of the Visual Studio 2010 Tools for Office Runtime. Installing the runtime should fix it.

For further information about this namespace please see the MSDN article here.

Johannes Kommer
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Well, sometimes it so happens that you may be referencing the wrong dll in some other project and they might not be throwing an error. I would suggest that you remove the reference (you can identify them by a small yellow warning icon on them) and re add them in all the projects. This should fix the issue. It did for me at least.

achakravarty
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