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POOverriding Border style in a new window previously defined in Application Resources (possibly bug?)
 

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    <p>I've written a small test case for some behavior that I don't quite understand. If someone could clear this up for me, I'd be most interested.</p> <p>I have, in App.xaml, </p> <pre><code>&lt;Application x:Class="WpfApplication1.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" StartupUri="MainWindow.xaml"&gt; &lt;Application.Resources&gt; &lt;Style TargetType="Border"&gt; &lt;Setter Property="BorderBrush" Value="Crimson" /&gt; &lt;/Style&gt; &lt;/Application.Resources&gt; &lt;/Application&gt; </code></pre> <p>I would like to remove the style for the following window so I redefine the style as seen in the following: -</p> <pre><code>&lt;Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"&gt; &lt;ListView&gt; &lt;ListView.Resources&gt; &lt;Style TargetType="Border" /&gt; &lt;/ListView.Resources&gt; &lt;ListView.View&gt; &lt;GridView&gt; &lt;GridViewColumn Header="test1" /&gt; &lt;GridViewColumn Header="test2" /&gt; &lt;/GridView&gt; &lt;/ListView.View&gt; &lt;/ListView&gt; &lt;/Window&gt; </code></pre> <p>I was under the impression that if I were to redefine the style, as above, this would override what I put in the Application resources. I have tested with setting the border brush to no avail even though this shouldn't be required.</p> <p>Below is a screen capture of the window for which I had assumed there be no border styling: -</p> <p><img src="https://i.stack.imgur.com/dMh4D.png" alt="Test case window"></p> <p><strong>Note</strong> It seems to look fine in the designer but not at runtime. Furthermore this works for other target types EXCEPT border (Tested with TextBlock and a few other controls)</p>
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