During the migration of WPF projects based on. Net framework to. Net core 3, system.windows.interactivity is no longer compatible.

The following is the specific migration process:

1. Replace package

Open nuget package manager, remove references to Microsoft.Expression.Interactions and System.Windows.Interactivity, and install Microsoft.Xaml.Behaviors.Wpf package.

2. Replace xmlns namespace

Here is an example code:


Replaced by:


3. Replace the namespace in the class file

Microsoft.Xaml.Interactivity and Microsoft.Xaml.Interactions replace by Microsoft.Xaml.Behaviors

More about Microsoft.Xaml.Behaviors.Wpf ,Click XAMLBehaviorsSample

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