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    <p>Ok, this is what I came to after some experimenting.</p> <p>I have created an Expression Blend 3 trigger with a dependency property (I named it Subscription). I bind the Subscription to the same value that my TextBlock is bound to and this trigger is attached to a ControlStoryboardAction from Expression Blend 3.</p> <p>Here's the trigger:</p> <pre><code>public class DataTriggerPlus : TriggerBase&lt;DependencyObject&gt; { public static readonly DependencyProperty SubscriptionProperty = DependencyProperty.Register("Subscription", typeof(string), typeof(DataTriggerPlus), new FrameworkPropertyMetadata("", new PropertyChangedCallback(OnSubscriptionChanged))); public string Subscription { get { return (string)GetValue(SubscriptionProperty); } set { SetValue(SubscriptionProperty, value); } } private static void OnSubscriptionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { ((DataTriggerPlus)d).InvokeActions(null); } } </code></pre> <p>Here's how it is attached to the storyboard:</p> <pre><code>&lt;TextBlock x:Name="textBlock" Text="{Binding TestProp}" Background="White"&gt; &lt;i:Interaction.Triggers&gt; &lt;local:DataTriggerPlus Subscription="{Binding TestProp}"&gt; &lt;im:ControlStoryboardAction Storyboard="{StaticResource Storyboard1}"/&gt; &lt;/local:DataTriggerPlus&gt; &lt;/i:Interaction.Triggers&gt; &lt;/TextBlock&gt; </code></pre> <p>I like this approach a lot, great job Blend 3 designers!</p> <p>Edit: answering Drew comment...</p> <p>Yes, it ships with Blend. You can just include Microsoft.Expression.Interactions.dll and System.Windows.Interactivity into your project.</p> <p>And yes, it is verbose (I have asked if somebody figured out a good way to apply behaviours via Styles <a href="https://stackoverflow.com/questions/1252277/is-it-possible-to-apply-blend-behavior-using-style-or-template">in this question</a>) - but there is also a benefit of flexibility. For example you can not only start a storyboard, but also switch a state or do some other action from the same trigger.</p>
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    1. USSergey Aldoukhov
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    1. COWhere does `<i:Interaction.Triggers>` come from? I'm guessing it ships with Blend. Is it available to us non-Blend users? I want to achieve the same thing in my code, though am hoping that a solution exists that's less verbose as I have many such instances that require this. Maybe it's possible via a Style...
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      1. USDrew Noakes
 

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