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POWPF custom TabItem disappears upon restyle?
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  1. POWPF custom TabItem disappears upon restyle?
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    copied!<p>I have a TabControl with a custom TabItem. The view xaml looks like this.</p> <pre class="lang-xml prettyprint-override"><code>&lt;UserControl x:Class="PeripheryModule.Views.MainTabView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:PeripheryModule.Controls" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300"&gt; &lt;Grid&gt; &lt;TabControl&gt; &lt;TabItem Header="TabItem 4" /&gt; &lt;local:CustomTabItem Header="Testing" /&gt; &lt;/TabControl&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre> <p>the CustomTabItem.xaml file looks like this</p> <pre class="lang-xml prettyprint-override"><code>&lt;ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:PeripheryModule.Controls"&gt; &lt;Style TargetType="{x:Type local:CustomTabItem}"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type local:CustomTabItem}"&gt; &lt;Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"&gt; &lt;/Border&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; &lt;/ResourceDictionary&gt; </code></pre> <p>and the CustomTabItem.xaml.cs file looks like this</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace PeripheryModule.Controls { public class CustomTabItem : TabItem { static CustomTabItem() { DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomTabItem), new FrameworkPropertyMetadata(typeof(CustomTabItem))); } } } </code></pre> <p>I get no errors thrown, all that happens is the tabItem simply doesn't show up. It will, however, show up if i comment out the <code>DefaultStyleKeyProperty</code> line in CustomTabItem.aspx.cs.</p> <p>I've probably got this all set up wrong anyways. Ultimate goal is to have closeable tabs.</p>
 

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