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Editorial Team
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Asked: 2026-05-31T15:41:08+00:00

I’m upgrading project from SL 4 to 5 and having some difficulties. See screenshot:

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I’m upgrading project from SL 4 to 5 and having some difficulties. See screenshot:

enter image description here

Microsoft.Expression.Interactions and System.Windows.Interactivity both parts of Blend 4 I beleive. Where do I find proper counterparts that I can use?

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  1. Editorial Team

    Download and install Expression Blend Preview for Silverlight 5. Then update your references.

    C:\Program Files (x86)\Microsoft SDKs\Expression\Blend\Silverlight\v5.0\Libraries\Microsoft.Expression.Interactions.dll

    C:\Program Files (x86)\Microsoft SDKs\Expression\Blend\Silverlight\v5.0\Libraries\System.Windows.Interactivity.dll

    (Note: even though it’s a "preview" edition, it’s fully functional as far as I can tell. The only limitation is that it can only be used for Silverlight 5.)

    Update:
    From the EULA:

    i. Right to Use and Distribute.

    The code and text files listed below are “Distributable Code.”

    · REDIST.TXT Files. You may copy and distribute the object code form of code listed in REDIST.TXT files.

    redist.en.txt:

    Expression Blend SDK for Silverlight 4

    =====================================================

    The following list is a list of files available with the Microsoft Expression Blend SDK for Silverlight 4 software for redistribution under the Expression Blend SDK for Silveright 4 license.

    Subject to the license terms for the software, you may redistribute the files contained in the following directories unmodified as a part of your programs:

    Libraries

    Templates

    {Program Files}\MSBuild\Microsoft\Expression\Blend\Silverlight\v4.0\

    Update 2: Redist.en.txt (C:\Program Files (x86)\Microsoft SDKs\Expression\Blend\Silverlight\v5.0) says:

    Expression Blend SDK Preview for Silverlight 5

    =====================================================

    The following list is a list of files available with the Microsoft Expression Blend SDK Preview for Silverlight 5 software for redistribution under the Expression Blend Preview for Silveright 5 license.

    Subject to the license terms for the software, you may redistribute the files contained in the following directories unmodified as a part of your programs:

    Libraries

    Templates

    {Program Files}\MSBuild\Microsoft\Expression\Blend\Silverlight\v5.0\

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