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POStyling a Textblock autogenerated in a ContentPresenter
 

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    <p>As I saw, a lot of people ran into this exact problem but I can't understand why my case is not working and it is starting to drive me crazy.</p> <p>Context: I have a <code>DataGrid</code> which is to be colored according to the values of each cell. Hence, I have a dynamic style resolving the actual template to be used for each cell. Backgrounds now work accordingly.</p> <p>New problem: when I have a dark background, I want the font color to be white and the font weight to be bold so the text is correctly readable. And... I can't style it correctly.</p> <p>I read some Stackoverflow posts about that:</p> <p><a href="https://stackoverflow.com/questions/4739530/how-to-change-textblock-default-properties-for-a-contentpresenter-in-a-template">This one fits my problem but doesn't provide me any working solution</a> <a href="https://stackoverflow.com/questions/3063264/contentpresenter-within-controltemplate-cannot-change-attached-dependency-propert">This one is also clear and detail but... duh</a> <a href="https://stackoverflow.com/questions/3970285/wpf-4-contentpresenter-textwrapping-style-is-not-applied-to-implicitedly-generate">This is almost the same problem as me but... Solution does not work</a></p> <p>Here is what I tried so far:</p> <pre><code>&lt;!-- Green template--&gt; &lt;ControlTemplate x:Key="Green" TargetType="{x:Type tk:DataGridCell}"&gt; &lt;Grid Background="Green"&gt; &lt;ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"&gt; &lt;ContentPresenter.Resources&gt; &lt;Style BasedOn="{StaticResource BoldCellStyle}" TargetType="{x:Type TextBlock}" /&gt; &lt;/ContentPresenter.Resources&gt; &lt;/ContentPresenter&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; </code></pre> <p>Does not work. Background is green, but text stays in black &amp; not bold.</p> <p>BTW, the BoldCellStyle is as easy as it can be:</p> <pre><code>&lt;Style x:Key="BoldCellStyle" TargetType="{x:Type TextBlock}"&gt; &lt;Setter Property="FontWeight" Value="Bold"/&gt; &lt;Setter Property="Foreground" Value="White" /&gt; &lt;/Style&gt; </code></pre> <p>Okay. Second try (which is a real stupid one but well...)</p> <pre><code>&lt;!-- Green template --&gt; &lt;ControlTemplate x:Key="Green" TargetType="{x:Type tk:DataGridCell}"&gt; &lt;Grid Background="Green"&gt; &lt;ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"&gt; &lt;ContentPresenter.Resources&gt; &lt;Style x:Key="BoldCellStyle" TargetType="{x:Type TextBlock}"&gt; &lt;Setter Property="FontWeight" Value="Bold"/&gt; &lt;Setter Property="Foreground" Value="White" /&gt; &lt;/Style&gt; &lt;/ContentPresenter.Resources&gt; &lt;/ContentPresenter&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; </code></pre> <p>Doesn't work either.</p> <p>Then, I tried to play with the <code>ContentPresenter</code>'s properties:</p> <pre><code>&lt;!-- Green template --&gt; &lt;ControlTemplate x:Key="Green" TargetType="{x:Type tk:DataGridCell}"&gt; &lt;Grid Background="Green"&gt; &lt;ContentPresenter TextElement.FontWeight="Bold" TextElement.Foreground="White" TextBlock.Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" /&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; </code></pre> <p>And... As you can expect, this does not even work.</p> <p>Intrigued, I used Snoop to browse all the components of my interface. In the first two cases, Snoop actually shows me that each cell is a <code>Grid</code> with a <code>ContentPresenter</code> containing a <code>TextBlock</code> and the actual <code>Style</code> but... The <code>TextBlock</code>'s properties do not apply and <code>FontWeight</code> is still normal.</p> <p>Last case, even more shocking, I can see that snoop shows me that we actually have a <code>ContentPresenter</code> with the right properties (ie <code>TextElement.FontWeight="Bold"</code>), but the autogenerated <code>TextBlock</code> under is - still - not styled.</p> <p>I can't get what am I missing here. I tried as you can see almost all I could possibly do here, and the <code>TextBlock</code>s keep being non-formatted.</p> <p>Any idea here? Thanks again!</p>
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