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PODoes VS2010 show data in UserControls during design time?
 

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  1. PODoes VS2010 show data in UserControls during design time?
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    <p>I have a trivial user control:</p> <pre><code>&lt;UserControl x:Class="Xxx.SimpleUserControl.SimpleTextUserControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="root"&gt; &lt;StackPanel Background="Blue"&gt; &lt;TextBlock x:Name="TitleTextBlock" Text="{Binding ElementName=root, Path=Title}" Background="White" Width="200" Height="30" Margin="5" /&gt; &lt;TextBlock Text="{Binding ElementName=root, Path=Time}" Background="White" Width="200" Height="30" Margin="9" /&gt; &lt;/StackPanel&gt; &lt;/UserControl&gt; </code></pre> <p>and the code behind:</p> <pre><code>using System; using System.ComponentModel; using System.Windows; using System.Windows.Controls; namespace Xxx.SimpleUserControl { /// &lt;summary&gt; /// Interaction logic for UserControl1.xaml /// &lt;/summary&gt; public partial class SimpleTextUserControl : UserControl { public SimpleTextUserControl() { InitializeComponent(); } [Browsable(true)] [Category("SimpleControl")] public string Title { get { return (string)GetValue(TitleProperty); } set { SetValue(TitleProperty, value); } } // Using a DependencyProperty as the backing store for Title. This enables animation, styling, binding, etc... public static readonly DependencyProperty TitleProperty = DependencyProperty.Register("Title", typeof(string), typeof(SimpleTextUserControl), new FrameworkPropertyMetadata("hello")); [Browsable(true)] [Category("SimpleControl")] public DateTime Time { get { return (DateTime)GetValue(TimeProperty); } set { SetValue(TimeProperty, value); } } // Using a DependencyProperty as the backing store for Time. This enables animation, styling, binding, etc... public static readonly DependencyProperty TimeProperty = DependencyProperty.Register("Time", typeof(DateTime), typeof(SimpleTextUserControl), new UIPropertyMetadata(DateTime.Now)); } } </code></pre> <p>I naively expect the VS2010 designer for the UserControl to display my default metadata values for my two controls - "hello" in one textblock, and today's date and time in other, but they are empty.</p> <p>If I compile, and drop the control in to a WPF application, it renders fine, but not whilst in the UserControl project xaml view/designer.</p> <p>I've tried changing the datacontext around, binding in different ways, implementing OnPropertyChanged etc., but nothing makes the data render in the UserControl project's design view.</p> <p>Does anyone know the answer to this one? I've searched around, and either it's so obvious I'm missing it, or it's 'just the way it is'.</p>
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