How to use a behavior

You must add a reference to the Behaviors namespace: xmlns:behaviors="clr-namespace:GM.WPF.Behaviors;assembly=GM.WPF".

Then you can simply use all of the behaviors: <MyControl behaviors:MyBehavior.MyProperty="Value">.

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An example of using the DataGridBehavior and its DisplayRowNumber property:

<DataGrid behaviors:DataGridBehavior.DisplayRowNumber="True" />