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    copied!<p>I figured out a way to do this with a behavior. I would have preferred a cleaner solution such as a binding, but it works.</p> <pre><code> &lt;telerik:RadTabControl x:Name="myRadTabControl"&gt; &lt;telerik:RadTabControl.ItemTemplate&gt; &lt;!-- Tab Item Header --&gt; &lt;DataTemplate&gt; &lt;TextBlock&gt; &lt;i:Interaction.Behaviors&gt; &lt;Behaviors:MakeLastTabItemInvisible ParentRadTabControl="{Binding ElementName=myRadTabControl}" /&gt; &lt;/i:Interaction.Behaviors&gt; &lt;/TextBlock&gt; &lt;/DataTemplate&gt; &lt;/telerik:RadTabControl&gt; &lt;/telerik:RadTabControl x:Name="myRadTabControl"&gt; public class MakeLastTabItemInvisible : Behavior&lt;FrameworkElement&gt; { #region ParentRadTabControl Dependency Property /// &lt;summary&gt; /// ParentRadTabControl /// &lt;/summary&gt; public RadTabControl ParentRadTabControl { get { return (RadTabControl)GetValue(ParentRadTabControlProperty); } set { SetValue(ParentRadTabControlProperty, value); } } /// &lt;summary&gt; /// ParentRadTabControl Dependency Property. /// &lt;/summary&gt; public static readonly DependencyProperty ParentRadTabControlProperty = DependencyProperty.Register( "ParentRadTabControl", typeof(RadTabControl), typeof(MakeLastTabItemInvisible), new PropertyMetadata(new PropertyChangedCallback(ParentRadTabControlChanged))); private static void ParentRadTabControlChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { MakeLastTabItemInvisible c = d as MakeLastTabItemInvisible; if (c != null) { if (e.NewValue == null) return; var parentTabControl = (RadTabControl)e.NewValue; if (parentTabControl.Items.Count &lt;= 0) return; var lastTabItem = parentTabControl.ItemContainerGenerator.ContainerFromIndex(parentTabControl.Items.Count - 1) as RadTabItem; if (lastTabItem != null) lastTabItem.Visibility = Visibility.Collapsed; } } #endregion } </code></pre>
 

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