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POBinding brush color to properties in ControlTemplate
 

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    <p>I am trying to make a CustomControl that derives from Button, which simply shows as a colored rectangle. I want to have two properties on my control that I can set, which specify the normal color (ColdColor), and another color that will be used when the mouse is over the control (HotColor). </p> <p>I can't figure out how to get the binding set up between the brush color and the control properties. This is my code:</p> <p>Generic.xaml:</p> <pre><code>&lt;Style TargetType="{x:Type local:TestCustomControl}"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type local:TestCustomControl}"&gt; &lt;Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Name="MyBorder"&gt; &lt;Border.Background&gt; &lt;!-- This works: --&gt; &lt;!--&lt;SolidColorBrush Color="Green" /&gt;--&gt; &lt;!-- This doesn't work: --&gt; &lt;SolidColorBrush Color="{TemplateBinding ColdColor}" /&gt; &lt;/Border.Background&gt; &lt;VisualStateManager.VisualStateGroups&gt; &lt;VisualStateGroup x:Name="CommonStates"&gt; &lt;VisualState x:Name="Normal"/&gt; &lt;VisualState x:Name="MouseOver"&gt; &lt;Storyboard&gt; &lt;!-- This works: --&gt; &lt;!--&lt;ColorAnimation Storyboard.TargetProperty="Background.Color" Storyboard.TargetName="MyBorder" To="Red" Duration="0:0:0.2"/&gt;--&gt; &lt;!-- This doesn't work: --&gt; &lt;ColorAnimation Storyboard.TargetProperty="Background.Color" Storyboard.TargetName="MyBorder" To="{TemplateBinding HotColor}" Duration="0:0:0.2"/&gt; &lt;/Storyboard&gt; &lt;/VisualState&gt; &lt;/VisualStateGroup&gt; &lt;/VisualStateManager.VisualStateGroups&gt; &lt;/Border&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>TestCustomControl.cs:</p> <pre><code>public class TestCustomControl : Button { static TestCustomControl() { DefaultStyleKeyProperty.OverrideMetadata(typeof(TestCustomControl), new FrameworkPropertyMetadata(typeof(TestCustomControl))); } public Color HotColor { get { return (Color)GetValue(HotColorProperty); } set { SetValue(HotColorProperty, value); } } // Using a DependencyProperty as the backing store for HotColor. This enables animation, styling, binding, etc... public static readonly DependencyProperty HotColorProperty = DependencyProperty.Register("HotColor", typeof(Color), typeof(TestCustomControl), new UIPropertyMetadata(new Color())); public Color ColdColor { get { return (Color)GetValue(ColdColorProperty); } set { SetValue(ColdColorProperty, value); } } // Using a DependencyProperty as the backing store for ColdColor. This enables animation, styling, binding, etc... public static readonly DependencyProperty ColdColorProperty = DependencyProperty.Register("ColdColor", typeof(Color), typeof(TestCustomControl), new UIPropertyMetadata(new Color())); } </code></pre> <p>Usage in MainWindow.xaml:</p> <pre><code>&lt;my:TestCustomControl ColdColor="#FF0000AF" HotColor="#FFFF00AF"/&gt; </code></pre> <p>EDIT: To say that "doesn't work" means that the TestCustomControl is entirely transparent.</p>
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