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POProblem with Binding Dependency Property on a UserControl
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  1. POProblem with Binding Dependency Property on a UserControl
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    copied!<p>I have a two userControls (IconUserControl &amp; DisplayUserControl), I'm having a problem with binding dependency properties, here's some detail:</p> <ul> <li>IconUserControl has a bool DP of IsDisplayShown</li> <li>DisplayUserControl has a bool DP of IsDisplayShown</li> </ul> <p>In the XAML I have:</p> <pre><code>&lt;local:DisplayUserControl x:Name="DisplayUserControl" IsDisplayShown="{Binding ElementName=IconUserControl, Path=IsDisplayShown, Converter={StaticResource DummyConverter}}" /&gt; &lt;local:IconUserControl x:Name="IconUserControl" /&gt; </code></pre> <p>When IconUserControl.IsDisplayShown is set to true, I can see in the DummyConverter this value getting passed, but it never sets DisplayUserControl.IsDisplayShown.</p> <p>However, if in the codebehind for the View I set <code>DisplayUserControl.IsDisplayShown = true;</code>, then it works fine.</p> <p>I have the DataContext for both UserControls set to "this" in the constructor. I've tried to fiddle with the "Mode" property of the binding.</p> <p>*Note: DummyConverter just returns the value, I only have this to confirm that the Binding is trying to work.</p> <p>What am I doing wrong?</p> <p>Edit:</p> <p>Here's the two DPs:</p> <pre><code>public bool IsDisplayShown { get { return (bool)GetValue(IsDisplayShownProperty); } set { SetValue(IsDisplayShownProperty, value); } } public static readonly DependencyProperty IsDisplayShownProperty = DependencyProperty.Register("IsDisplayShown", typeof(bool), typeof(IconUserControl), new UIPropertyMetadata(false)); public bool IsDisplayShown { get { return (bool)GetValue(IsDisplayShownProperty); } set { if (value) ShowOpenItems(); else HideOpenItems(); SetValue(IsDisplayShownProperty, value); } } public static readonly DependencyProperty IsDisplayShownProperty= DependencyProperty.Register("IsDisplayShown", typeof(bool), typeof(DisplayUserControl), new UIPropertyMetadata(false)); </code></pre>
 

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