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WPF: System.Windows.Interactivity is broken or missing

 

In a project, the System.Windows.Interactivity reference is showing an error.

 

System.Windows.Interactivity

 

 

Screeshot in the project explorer

This project can not be viewed in the object browser.

 

Solution:

One must integrate the package via Nuget

Right-click on References and Manage NuGet Packages ...

 

 

Install NuGet Package

Under Browse enter the filter "system.windows.activity"

 

Then choose:

Select the Nuget package: System.Windows.Interactivity.WPF

 

Microsoft Expression Blend 4 SDK includes new built-in behaviors, which are reusable pieces of packaged code that can be attached to any DependencyObject,

        And then fine-tuned by changing their properties. Behaviors allow you to add interactivity to your applications without having to write any code.

        The Behavior API of triggers classes: Trigger, Action and Behavior.

 

 

Project URL as download

Microsoft Expression Blend Software Development Kit (SDK) for .NET 4

The Expression Blend software development kit (SDK) contains redistributable components.

[Lnk "https://www.microsoft.com/en-us/download/details.aspx?id=10801" /]

 

After this, the project is error-free

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