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    copied!<p>As I told you in your last (now duplicated) question, you will need to define a new <code>ControlTemplate</code> to achieve your goal. </p> <p>For future reference:</p> <blockquote> <p>Asking duplicate questions on StackOverflow is <em>not</em> approved by the community, <em>especially if you are asking a duplicate of your own question</em>. If you do not understand your answer(s) or do not feel that they answer your question adequately, you should ask the answer author(s) to explain it further in <em>that</em> question. </p> </blockquote> <p>Now I'll get off my soap box and get you further on your way to achieving your goal. As I said, you will need to define a new <code>ControlTemplate</code>... there is no way around this. The reason for this is simple - you want to add <code>Trigger</code>s to affect the XAML controls that are defined <em>inside</em> the default <code>ControlTemplate</code>, but you have no other way to do this from XAML.</p> <p>So, how do we define a new <code>ControlTemplate</code>? It's quite simple really: we just define some XAML in the <code>Template</code> property that describes the way that we want the control to look and behave. Please refer to the link that I provided you with for help with this in your last post. Additionally, here is a <em>very</em> simplified example:</p> <pre><code>&lt;Style TargetType="{x:Type ComboBox}"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type ComboBox}"&gt; &lt;Border Name="Border" CornerRadius="2" Padding="2"&gt; &lt;ScrollViewer Margin="0" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto"&gt; &lt;ItemsPresenter /&gt; &lt;/ScrollViewer&gt; &lt;/Border&gt; &lt;ControlTemplate.Triggers&gt; &lt;Trigger Property="IsEnabled" Value="False"&gt; &lt;Setter TargetName="Border" Property="Background" Value="Red"/&gt; &lt;/Trigger&gt; &lt;/ControlTemplate.Triggers&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>Apply this <code>Style</code> to a <code>ComboBox</code> with the <code>IsEnabled</code> property set to <code>False</code> and you will see that it is red. Now you're probably thinking 'that doesn't look like a <code>ComboBox</code>' and you'd be right. That's because I just replaced all of the XAML from the default <code>ComboBox</code> <code>ControlTemplate</code> with a little bit that slightly resembles just the drop down section for simplicity.</p> <p>Your job now is to define your own <code>ControlTemplate</code> that replicates the default XAML and adds the relevant <code>Trigger</code>s that I have shown you in this and your last post. In the example, notice how the <code>Trigger.TargetName</code> is set to <code>Border</code>, which is the name of the internal <code>Border</code> control used. You will need to do this for each element that you want to colour.</p> <p>Here is a link to the default <code>ControlTemplate</code> for the <code>ComboBox</code> control. When you see how large it is, you will understand why I didn't use it in the example.</p> <p><a href="http://msdn.microsoft.com/en-us/library/ms752094.aspx" rel="nofollow">ComboBox Styles and Templates</a></p>
 

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