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    <p>Another thing that you can do is implement <code>DataTrigger</code> for <code>Grid</code> which will override default <code>MouseLeave</code> and <code>MouseEnter</code> events to do nothing when <code>DisableTriggers</code> property changed.</p> <pre><code> &lt;Style TargetType="{x:Type Grid}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding DisableTriggers}" Value="True"&gt; &lt;Setter Property="Style" Value="{StaticResource GridStyleWithoutStoryboards}" /&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; </code></pre> <p>This is the case when you don't want to use <code>AttachedBehaviors</code>. Otherwise I suggest to handle storyboards cleanup in behavior. It is much easier:</p> <pre><code>void OnDisableTriggersPropertyChanged( object sender, EventArgs args ) { // If IsDisposed property was changed and it is true now - cleanup triggers. if ((bool)args.NewValue) { var grid = (Grid)sender; // Ideally you can remove specific triggers. // Clear all will work for simple cases. grid.Triggers.Clear(); } } </code></pre> <p>So summing up you will have to add attached behavior with <code>DisableTriggers</code> dependency property which performs cleanup action in <code>OnChanged</code> handler.</p> <p>If you want to unsubscribe only from specific events:</p> <pre><code> foreach (var eventToUnsubscribe in grid.Triggers.OfType&lt;EventTrigger&gt;() .Where(x =&gt; x.RoutedEvent == UIElement.MouseEnterEvent || x.RoutedEvent == UIElement.MouseLeaveEvent).ToList()) { grid.Triggers.Remove(eventToUnsubscribe); }; </code></pre>
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