Upgrading VSTO project to .net 4 - What references do I actually need?

Posted by Dana on Stack Overflow See other posts from Stack Overflow or by Dana
Published on 2010-05-18T14:25:25Z Indexed on 2010/05/18 14:31 UTC
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vsto

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.net-4.0

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upgrade

I'm developing an application for Office. It originally targeted .net 3.5, but I decided to upgrade to .net 4 because of some WPF issues that I've run into.

When I switched all the projects in my solution and rebuilt, I got an error saying to include System.Xaml. I did that and rebuilt, and VS2010 told me to include another reference, so I did. This happened a couple more times, and finally it asked me to include Microsoft.Office.Tools.Common.v9.0, and when I did I got this error:

Microsoft.Office.Tools.CustomTaskPaneCollection exists in both Microsoft.Office.Tools.Common.v9.0.dll and Microsoft.Office.Tools.Common.dll

I have both Microsoft.Office.Tools.Common.v9.0 and Microsoft.Office.Tools.Common referenced in my project, but the problem is that if I remove either, I get an error. Am I doing something wrong? Is it odd that I would need both references? I find it strange that CustomTaskPaneCollection would be defined in two different binaries.

If I remove Microsoft.Office.Tools.Common, the error that I get is "Cannot find the interop type that matches the embedded interop type 'Microsoft.Office.Tools.IAddInExtension'. Are you missing an assembly reference?"

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