WPF: System.Windows.Interactivity is broken or missing
project, the System.Windows.Interactivity reference is showing an error.
in the project explorer
project can not be viewed in the object browser.
integrate the package via Nuget
on References and Manage NuGet Packages ...
Install NuGet Package
enter the filter "system.windows.activity"
Nuget package: System.Windows.Interactivity.WPF
Expression Blend 4 SDK includes new built-in behaviors, which are reusable
pieces of packaged code that can be attached to any DependencyObject,
then fine-tuned by changing their properties. Behaviors allow you to add
interactivity to your applications without having to write any code.
Behavior API of triggers classes: Trigger, Action and Behavior.
Microsoft Expression Blend Software Development
Kit (SDK) for .NET 4
Expression Blend software development kit (SDK) contains redistributable
the project is error-free