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wpfxamlexpression-blend

Is it possible to apply Blend behavior using style or template?

I'm very happy with my small collection of Blend behaviors, actions and triggers - they are easy to use and powerful. But I still can't figure out how to avoid applying them on per element basis. For example, if I have a behavior as such:

<Rectangle>
    <i:Interaction.Behaviors>
        <il:MouseDragElementBehavior/>
    </i:Interaction.Behaviors>
</Rectangle>

and I have a few draggable rectangles in my Window, each of them has to have the above markup to be draggable. What I would like to do is to be able to write something like this:

<Style x:Key="RectangleStyle" TargetType="{x:Type Rectangle}">
    <Setter Property="i:Interaction.Behaviors" 
        Value="il:MouseDragElementBehavior"/>
</Style>

It could be style, template, or some other way to avoid behavior or action markup repetition. The best solution I came up so far is creating a special behavior for the container (when attached, it enumerates children attaching to the children events). Any ideas?

Solution

  • I ran into the same problem and I posted on my blog on how to create an attached property to work around this shortcoming of the Blend SDK.