Question

I want to add a behaviour to a TextBlock in silverlight 3.

I have a behaviour class in a c# file in a different project than my xaml file within my solution.

public class FooBehavior : Behavior<TextBlock>
{
   ...
}

How do I attach this behaviour to my TextBlock? Would be nice to do without involving c# code.

Answer 1

Include the following lines in the definition of your UserControl:

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:myBehaviors="clr-namespace:MyNamespace.Behaviors;assembly=MyAssembly"

Then on the TextBlock have this code:

<TextBlock .....>
    <i:Interaction.Behaviors>
        <myBehaviors:FooBehaviour/>
    </i:Interaction.Behaviors>
</TextBlock>