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    <p>I have a method that it can verify high contrast white and high contrast black. It work well in my project. I hope it can help you.</p> <p>First, need new a DependencyProperty to judge if it is white or black.</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Media; namespace Views.Styles { public class HighConstrastWhite : DependencyObject { #region Singleton pattern private HighConstrastWhite() { SystemParameters.StaticPropertyChanged += SystemParameters_StaticPropertyChanged; } private static HighConstrastWhite _instance; public static HighConstrastWhite Instance { get { if (_instance == null) _instance = new HighConstrastWhite(); return _instance; } } #endregion public void ApplyCurrentTheme() { if(SystemParameters.HighContrast) { SolidColorBrush windowbrush = SystemColors.WindowBrush; if (windowbrush.Color.R == 255 &amp;&amp; windowbrush.Color.G == 255 &amp;&amp; windowbrush.Color.B == 255) HighConstrastWhite.Instance.IsHighContrastWhite = true; else HighConstrastWhite.Instance.IsHighContrastWhite = false; } } void SystemParameters_StaticPropertyChanged(object sender, PropertyChangedEventArgs e) { //Console.WriteLine(e.PropertyName); if (e.PropertyName == "HighContrast") { ApplyCurrentTheme(); } } #region DP IsHighContrast public static readonly DependencyProperty IsHighContrastWhiteProperty = DependencyProperty.Register( "IsHighContrastWhite", typeof(bool), typeof(HighConstrastWhite), new PropertyMetadata( false )); public bool IsHighContrastWhite { get { return (bool)GetValue(IsHighContrastWhiteProperty); } private set { SetValue(IsHighContrastWhiteProperty, value); } } #endregion } } </code></pre> <p>Second, you can use it in trigger. But you do best to use it with SystemParameters.HighContrast. For example:</p> <pre><code> ... xmlns:style="clr-namespace:Views.Styles" ... &lt;Style x:Key="FindTextImageButtonStyle" TargetType="controls:ImageButton" BasedOn="{StaticResource FunctionImageButtonStyle}"&gt; &lt;Setter Property="BorderThickness" Value="0,0,1,0"/&gt; &lt;Setter Property="NormalImage" Value="pack://application:,,,/App;component/Assets/Images/Find.png"/&gt; &lt;Setter Property="OverImage" Value="pack://application:,,,/App;component/Assets/Images/Find.png"/&gt; &lt;Setter Property="PressedImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Pressed.png"/&gt; &lt;Setter Property="DisableImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Disable.png"/&gt; &lt;Setter Property="Tag" Value="{DynamicResource {x:Static SystemParameters.HighContrastKey}}"/&gt; &lt;Style.Triggers&gt; &lt;MultiDataTrigger&gt; &lt;MultiDataTrigger.Conditions&gt; &lt;Condition Binding="{Binding Path=IsHighContrastWhite, Source={x:Static style:HighConstrastWhite.Instance}}" Value="True" /&gt; &lt;Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=Tag}" Value="true"/&gt; &lt;/MultiDataTrigger.Conditions&gt; &lt;Setter Property="NormalImage" Value="pack://application:,,,/App;component/Assets/Images/Find.scale-100_contrast-white.png"/&gt; &lt;Setter Property="OverImage" Value="pack://application:,,,/App;component/Assets/Images/Find.scale-100_contrast-white.png"/&gt; &lt;Setter Property="PressedImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Pressed.scale-100_contrast-white.png"/&gt; &lt;Setter Property="DisableImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Disable.png"/&gt; &lt;/MultiDataTrigger&gt; &lt;MultiDataTrigger&gt; &lt;MultiDataTrigger.Conditions&gt; &lt;Condition Binding="{Binding Path=IsHighContrastWhite, Source={x:Static style:HighConstrastWhite.Instance}}" Value="False" /&gt; &lt;Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=Tag}" Value="true"/&gt; &lt;/MultiDataTrigger.Conditions&gt; &lt;Setter Property="NormalImage" Value="pack://application:,,,/App;component/Assets/Images/Find.scale-100_contrast-black.png"/&gt; &lt;Setter Property="OverImage" Value="pack://application:,,,/App;component/Assets/Images/Find.scale-100_contrast-black.png"/&gt; &lt;Setter Property="PressedImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Pressed.scale-100_contrast-black.png"/&gt; &lt;Setter Property="DisableImage" Value="pack://application:,,,/App;component/Assets/Images/Find_Disable.png"/&gt; &lt;/MultiDataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; </code></pre> <p>By the way, For startup your app correctly in the high contrast theme, you need add code in your MainWindow.xaml.cs to trigger manually.</p> <pre><code>... public MainWindow() { HighConstrastWhite.Instance.ApplyCurrentTheme(); ... </code></pre>
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