WPF VisualBrush won't paint on a grid background

Question

I have a System.Windows.Media.VisualBrush with the source shown below. I then attempt to use it as the background for a grid. But my pattern don't appear. It should be something resembling ocean waves. Does anyone see anything wrong with what I wrote?

<VisualBrush
    x:Name="brBrush"
    x:Key="WaveBr"
    Stretch="None"
    TileMode="Tile"
    Viewbox="40,0,120,20">
    <VisualBrush.Visual>
        <Grid>
            <Grid.Effect>
                <BlurEffect
                    Radius="2" />
            </Grid.Effect>
            <Grid.RowDefinitions>
                <RowDefinition />
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition
                    Width="*" />
            </Grid.ColumnDefinitions>
            <Rectangle
                Fill="LightCyan" />
            <Path
                Data="M0,10 C40,20 80,10 120,0 160,20 200, 10"
                StrokeThickness="1"
                Stroke="Teal"
                Panel.ZIndex="1" />
        </Grid>
    </VisualBrush.Visual>
</VisualBrush>

Answer 1

<Window x:Class="WpfApp8.MainWindow"  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
        xmlns:local="clr-namespace:WpfApp8"  
        mc:Ignorable="d"  
        Title="MainWindow" Height="450" Width="800">  
    <Window.Resources>  
        <VisualBrush  
                    x:Name="brBrush"  
                    x:Key="WaveBr"  
                    TileMode="Tile"   
                    Viewport="0,0,220,20" ViewportUnits="Absolute"   
                    Viewbox="0,0,1,1" ViewboxUnits="RelativeToBoundingBox">  
            <!-- default of viewport and viewbox is relative-->  
            <!-- https://learn.microsoft.com/en-us/dotnet/desktop/wpf/graphics-multimedia/tilebrush-overview?view=netframeworkdesktop-4.8 -->  
            <VisualBrush.Visual>  
                <Grid>  
                    <Grid.Effect>  
                        <BlurEffect Radius="0" /> <!-- are you want space? -->  
                    </Grid.Effect>  
                    <Grid.RowDefinitions>  
                        <RowDefinition />  
                    </Grid.RowDefinitions>  
                    <Grid.ColumnDefinitions>  
                        <ColumnDefinition Width="*" />  
                    </Grid.ColumnDefinitions>  
                    <Rectangle Fill="LightCyan" />  
  
                    <!-- 'C' needs three points -->  
                    <!-- https://learn.microsoft.com/en-us/dotnet/desktop/wpf/graphics-multimedia/path-markup-syntax?view=netframeworkdesktop-4.8#cubic-bezier-curve-command -->  
                    <Path  
                        Data="M0,10 C40,20 80,10 120,0 C160,20 200,10 220,10"  
                        StrokeThickness="1"  
                        Stroke="Teal"  
                        Panel.ZIndex="1" />  
                </Grid>  
            </VisualBrush.Visual>  
        </VisualBrush>  
    </Window.Resources>  
  
    <Grid Background="{StaticResource WaveBr}" />  
</Window>  

Answer 2

This is my latest version of that brush. I'm able to use it on other controls. Just not that grid. When I apply it to the TabItem, I find it in the header, not the body of the tab. See below the code. You'll note that instead of the sine wave pattern I was expecting, I get a couple of independent curves. The pattern isn't continuous. The viewport is an attempt to use just part of the pattern. The second curve was attempt to have the curve extend past the portion being used.

   XML  
   <VisualBrush  
   	x:Name="brBrush"  
   	x:Key="WaveBr"  
   	TileMode="Tile"  
   	Viewport="80,0,200,20"  
   	ViewportUnits="Absolute">  
   	<VisualBrush.Visual>  
   		<Grid>  
   			<Grid.Effect>  
   				<BlurEffect  
   					Radius="10"/>  
   			</Grid.Effect>  
   			<Grid.RowDefinitions>  
   				<RowDefinition />  
   			</Grid.RowDefinitions>  
   			<Grid.ColumnDefinitions>  
   				<ColumnDefinition  
   					Width="*" />  
   			</Grid.ColumnDefinitions>  
   			<Rectangle  
   				Fill="LightCyan" />  
   			<Path  
   				Data="M0,10 C40,20 80,10 120,0 C160,10 200,20 240,10"  
   				StrokeThickness="1"  
   				Stroke="Teal"  
   				Panel.ZIndex="1" />  
   		</Grid>  
   	</VisualBrush.Visual>  
   </VisualBrush>  

Answer 3

I changed the Radius="10" to Radius="0" and set ContentTemplate for the TabItem as below shown:

 <Window.Resources>  
        <VisualBrush  x:Name="brBrush" x:Key="WaveBr" TileMode="Tile" Viewport="80,0,200,20"  ViewportUnits="Absolute">  
            <VisualBrush.Visual>  
                <Grid>  
                    <Grid.Effect>  
                        <BlurEffect Radius="0"/>  
                    </Grid.Effect>  
                    <Grid.RowDefinitions>  
                        <RowDefinition />  
                    </Grid.RowDefinitions>  
                    <Grid.ColumnDefinitions>  
                        <ColumnDefinition Width="*" />  
                    </Grid.ColumnDefinitions>  
                    <Rectangle Fill="LightCyan" />  
                    <Path Data="M0,10 C40,20 80,10 120,0 C160,10 200,20 240,10" StrokeThickness="1" Stroke="Teal" Panel.ZIndex="1" />  
                </Grid>  
            </VisualBrush.Visual>  
        </VisualBrush>  
    </Window.Resources>  
    <Grid>  
        <TabControl TabStripPlacement="Top" Margin="0, 0, 0, 10">  
            <TabItem Name="backgroundcolor" Header="Background" >  
                <TabItem.Resources>  
                    <Style TargetType="TabItem">  
                        <Setter Property="ContentTemplate">  
                            <Setter.Value>  
                                <DataTemplate DataType="{x:Type TabItem}">  
                                    <Border x:Name="grid" Background="{StaticResource WaveBr}">  
                                        <ContentPresenter Content="{Binding}" />  
                                    </Border>  
                                </DataTemplate>  
                            </Setter.Value>  
                        </Setter>  
                    </Style>  
                </TabItem.Resources>  
                <TabItem.Content>Background property information goes here.</TabItem.Content>  
            </TabItem>  
          
            <TabItem Name="bordercolor" Header="BorderColor">  
                <TabItem.Content>Border color property information goes here.</TabItem.Content>  
            </TabItem>  
        </TabControl>  
    </Grid>  

The result picture is:

---

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Answer 4

Well, the blur was important to keep it from interfering with the foreground. There'll be a lot of stuff in front. I already noticed the blur was interfering with the what's desired. Also, I'm implementing a TabItem derived class that will hold this functionality. It won't be in the window.

The code below seems to do a good job of getting what I want, but only on the tab header. Not the rectangle that's in front.

XML
<TabItem
    x:Class="BattleAnimator.Tab"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:BattleAnimator"
    mc:Ignorable="d"
    d:DesignHeight="450"
    d:DesignWidth="800"
    Background="{DynamicResource WaveBr}">
    <TabItem.Header>
        <StackPanel
            Orientation="Horizontal">
            <Label
                VerticalAlignment="Center"
                VerticalContentAlignment="Center"
                MaxWidth="397">
                <Label.Content>
                    <TextBlock
                x:Name="textDocTitle"
                        TextTrimming="WordEllipsis" />
                </Label.Content></Label>
            <Button
                x:Name="btnClose"
                Click="OnCloseClicked"
                ToolTip="Close this script"
                Style="{DynamicResource TabBarCloseBtn}"
                Background="{x:Null}">✘</Button>
        </StackPanel>
    </TabItem.Header>
    <TabItem.Resources>
        <VisualBrush
            x:Name="brWaves"
            x:Key="WaveBr"
            TileMode="Tile"
            Viewport="0,0,120,20"
            ViewportUnits="Absolute">
            <VisualBrush.Visual>
                <Canvas
                    Name="svg8"
                    Width="41.854992"
                    Height="5.3903913">
                    <Canvas.RenderTransform>
                        <TranslateTransform
                            X="0"
                            Y="0" />
                    </Canvas.RenderTransform>
                    <Canvas.Resources>
                        <RectangleGeometry
                            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                            x:Key="clipPath3934"
                            Rect="21.307501, 10.076149, 41.854992, 5.3903913" />
                    </Canvas.Resources>
                    <!--Unknown tag: sodipodi:namedview-->
                    <!--Unknown tag: metadata-->
                    <Canvas
                        Name="layer1">
                        <Canvas.RenderTransform>
                            <TranslateTransform
                                X="20.496686"
                                Y="-4.7844821" />
                        </Canvas.RenderTransform>
                        <Canvas
                            Name="g4000"
                            Clip="{StaticResource clipPath3934}">
                            <Canvas.RenderTransform>
                                <TranslateTransform
                                    X="-41.804187"
                                    Y="-5.2916669" />
                            </Canvas.RenderTransform>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="path3986"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 10.059367 c 7.143751 0 14.966886 -5.2916731 21.166667 -5.2916665 6.614585 7e-6 15.08125 5.2916665 21.166666 5.2916665"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3988"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 11.955547 c 7.143751 0 14.966886 -5.2916727 21.166667 -5.2916661 6.614585 7e-6 15.08125 5.2916661 21.166666 5.2916661"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3990"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 13.719436 c 7.143751 0 14.966886 -5.2916728 21.166667 -5.2916662 6.614585 7e-6 15.08125 5.2916662 21.166666 5.2916662"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3992"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 15.483325 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3994"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 17.247214 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3996"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 19.011103 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3998"
                                StrokeThickness="0.264583"
                                Stroke="#008080">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 20.774992 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291667 6.614585 8e-6 15.08125 5.291667 21.166666 5.291667"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                        </Canvas>
                    </Canvas>
                </Canvas>
            </VisualBrush.Visual>
        </VisualBrush>
    </TabItem.Resources>
    <DockPanel>
        <StatusBar
            DockPanel.Dock="Bottom">
            <Label
                Content="Frame # "
                VerticalAlignment="Center"
                HorizontalAlignment="Center"
                HorizontalContentAlignment="Center"
                VerticalContentAlignment="Center" />
            <Border
                Style="{DynamicResource StatusBarTextBlock}"
                VerticalAlignment="Center"
                HorizontalAlignment="Center">
                <Label
                    x:Name="textFrameNum"
                    VerticalAlignment="Center"
                    HorizontalAlignment="Center"
                    VerticalContentAlignment="Center"
                    HorizontalContentAlignment="Center" />
            </Border>
            <Label
                Content="of" />
            <Border
                Style="{DynamicResource StatusBarTextBlock}"
                VerticalAlignment="Center"
                HorizontalAlignment="Center">
                <Label
                    x:Name="textFrameCnt"
                    VerticalContentAlignment="Center"
                    VerticalAlignment="Center"
                    HorizontalContentAlignment="Center"
                    HorizontalAlignment="Center" />
            </Border>
            <Separator
                Style="{DynamicResource ToolBarSep}" />
            <Button
                x:Name="btnPrev"
                Content="Previous"
                Style="{DynamicResource ToolbarBtn}"
                VerticalAlignment="Center"
                VerticalContentAlignment="Center" />
            <Button
                x:Name="btnPlay"
                Content="Play"
                Style="{DynamicResource ToolbarBtn}"
                VerticalContentAlignment="Center"
                HorizontalContentAlignment="Center" />
            <Button
                x:Name="btnNext"
                Content="Next"
                Style="{DynamicResource ToolbarBtn}"
                VerticalAlignment="Center"
                HorizontalAlignment="Center"
                HorizontalContentAlignment="Center" />
            <Separator
                Style="{DynamicResource ToolBarSep}" />
            <Label
                Content="Playback speed :"
                VerticalContentAlignment="Center"
                HorizontalContentAlignment="Center"
                VerticalAlignment="Center" />
            <Slider
                x:Name="sliderPlaySpeed"
                VerticalAlignment="Center"
                VerticalContentAlignment="Center"
                AutoToolTipPlacement="TopLeft"
                TickPlacement="Both"
                Value="1"
                Minimum="1"
                IsMoveToPointEnabled="True"
                IsSnapToTickEnabled="True"
                Width="200"
                Foreground="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" />
        </StatusBar>
        <Separator
            DockPanel.Dock="Bottom" />
        <ScrollViewer>
            <Viewbox>
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition />
                    </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition />
                    </Grid.ColumnDefinitions>
                    <Rectangle
                        Fill="{DynamicResource WaveBr}">
                        <Rectangle.Effect>
                            <BlurEffect />
                        </Rectangle.Effect>
                    </Rectangle>
                    <Image
                        x:Name="imgMidBkg"
                        Panel.ZIndex="1" />
                    <Canvas
                        x:Name="canvasForeground"
                        Panel.ZIndex="2" />
                </Grid>
            </Viewbox>
        </ScrollViewer>
    </DockPanel>
</TabItem>

Answer 5

This is proving to be rather frustrating. The first example gives me a tab control with one tab containing an empty listbox. The second one displays only blank tabs. Can someone explain what the difference is?

XML
<TabControl
    x:Name="sheetMain">
    <TabItem>
        <ListBox />
    </TabItem>
</TabControl>



XML
<Window
    x:Class="BattleAnimator.MainWnd"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:BattleAnimator"
    mc:Ignorable="d"
    Title="Naval Battle Animator"
    Height="450"
    Width="800"
    WindowStyle="ToolWindow"
    ResizeMode="CanResizeWithGrip"
    WindowStartupLocation="CenterScreen"
    WindowState="Maximized"
    FontFamily="Times New Roman">
    <Window.Resources>
        <VisualBrush
            x:Name="brWaves"
            x:Key="WaveBr"
            TileMode="Tile"
            Viewport="0,0,120,20"
            ViewportUnits="Absolute">
            <VisualBrush.Visual>
                <Canvas
                    Width="41.854992"
                    Height="5.3903913">
                    <Canvas.RenderTransform>
                        <TranslateTransform
                            X="0"
                            Y="0" />
                    </Canvas.RenderTransform>
                    <Canvas.Resources>
                        <RectangleGeometry
                            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                            x:Key="clipPath3934"
                            Rect="21.307501, 10.076149, 41.854992, 5.3903913" />
                    </Canvas.Resources>
                    <!--Unknown tag: sodipodi:namedview-->
                    <!--Unknown tag: metadata-->
                    <Canvas
                        Name="layer1">
                        <Canvas.RenderTransform>
                            <TranslateTransform
                                X="20.496686"
                                Y="-4.7844821" />
                        </Canvas.RenderTransform>
                        <Canvas
                            Clip="{StaticResource clipPath3934}"
                            Background="LightCyan">
                            <Canvas.RenderTransform>
                                <TranslateTransform
                                    X="-41.804187"
                                    Y="-5.2916669" />
                            </Canvas.RenderTransform>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="path3986"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 10.059367 c 7.143751 0 14.966886 -5.2916731 21.166667 -5.2916665 6.614585 7e-6 15.08125 5.2916665 21.166666 5.2916665"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3988"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 11.955547 c 7.143751 0 14.966886 -5.2916727 21.166667 -5.2916661 6.614585 7e-6 15.08125 5.2916661 21.166666 5.2916661"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3990"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 13.719436 c 7.143751 0 14.966886 -5.2916728 21.166667 -5.2916662 6.614585 7e-6 15.08125 5.2916662 21.166666 5.2916662"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3992"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 15.483325 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3994"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 17.247214 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3996"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 19.011103 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291666 6.614585 7e-6 15.08125 5.291666 21.166666 5.291666"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                            <Path
                                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                                Name="use3998"
                                StrokeThickness="0.264583"
                                Stroke="Cyan">
                                <Path.Data>
                                    <PathGeometry
                                        Figures="m 21.166666 20.774992 c 7.143751 0 14.966886 -5.291673 21.166667 -5.291667 6.614585 8e-6 15.08125 5.291667 21.166666 5.291667"
                                        FillRule="EvenOdd" />
                                </Path.Data>
                            </Path>
                        </Canvas>
                    </Canvas>
                </Canvas>
            </VisualBrush.Visual>
        </VisualBrush>
        <DataTemplate
            x:Key="TabCtnts">
            <ListBox>t</ListBox>
        </DataTemplate>
        <DataTemplate x:Key="TabHdr">
            <StackPanel
                Orientation="Horizontal"
                DataContext="{Binding DataContext, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabItem}}}">
                <Label
                    VerticalAlignment="Center"
                    VerticalContentAlignment="Center"
                    MaxWidth="397">
                    <Label.Content>
                        <TextBlock
                            TextTrimming="WordEllipsis"
                            Text="{Binding Title}"
                            ToolTip="{Binding Title}" />
                    </Label.Content>
                </Label>
                <Button
                    Click="OnChildNeedsClosed"
                    ToolTip="Close this script"
                    Style="{DynamicResource TabBarCloseBtn}"
                    Background="{x:Null}">✘</Button>
            </StackPanel>
        </DataTemplate >
        <DataTemplate
            x:Key="Tab">
            <TabItem
                ContentTemplate="{DynamicResource TabCtnts}"
                HeaderTemplate="{DynamicResource TabHdr}" />
        </DataTemplate>
    </Window.Resources>
    <DockPanel>
        <Border
            DockPanel.Dock="Top"
            BorderBrush="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"
            BorderThickness="0,0,0,1"
            Margin="0,0,0,3"
            Padding="0,3,0,0">
            <StackPanel
                x:Name="toolBar"
                Orientation="Horizontal">
                <Button
                    x:Name="btnOpen"
                    Content="Open"
                    Click="OnOpenClicked"
                    Style="{DynamicResource ToolbarBtn}" />
                <Separator
                    Style="{DynamicResource ToolBarSep}" />
                <Button
                    x:Name="btnFullScreen"
                    Content="Full Screen"
                    Style="{DynamicResource ToolbarBtn}" />
            </StackPanel>
        </Border>
        <TabControl
            x:Name="sheetMain"
            ItemTemplate="{DynamicResource Tab}" />
    </DockPanel>
</Window>