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Hell I have a created my own CustomWindow with a special design. I have a CustomControlLibrary. When I include it a
WPF Application and start the Application i see the new design. But I would like to see the new design in design time.

Here you will see my code of the CustomWindow

    public class CustomWindow : Window
        static CustomWindow()
            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomWindow), new FrameworkPropertyMetadata(typeof(CustomWindow)));

        public void button1_Click(object sender, RoutedEventArgs e)

<ResourceDictionary xmlns=""
    xmlns:cc ="clr-namespace:WpfCustomControlLibrary1"
    <Style TargetType="{x:Type cc:CustomWindow}">
        <Setter Property="AllowsTransparency" Value="True"/>
        <Setter Property="WindowStyle" Value="None"/>
        <Setter Property="Template">
                <ControlTemplate TargetType="{x:Type cc:CustomWindow}">
                    <Border BorderBrush="Green" BorderThickness="1" CornerRadius="10" removed="Aquamarine">
                 ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
                 Content="{TemplateBinding ContentControl.Content}" />

Here you will see my code of the Demo Application:

namespace WpfApplication1
    /// <summary>
    /// Interaktionslogik für MainWindow.xaml
    /// </summary>
    public partial class MainWindow : CustomWindow
        public MainWindow()
<my:CustomWindow x:Class="WpfApplication1.MainWindow"
        Title="MainWindow" Height="350" Width="525">
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="74,84,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
Posted 4-Sep-12 0:31am

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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