Can't create multiple instances of Geometry Drawing [duplicate] - wpf

Question

This question already has answers here:
Content of a Button Style appears only in one Button instance
(3 answers)
Closed 4 years ago.
Icons in my application are stored as geometry drawings in a resource dicitony. for example:
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Viewbox x:Key="ViewboxIconClose"
Width="16"
Height="16">
<Rectangle Width="16" Height="16">
<Rectangle.Fill>
<DrawingBrush>
<DrawingBrush.Drawing>
<DrawingGroup>
<DrawingGroup.Children>
<GeometryDrawing Brush="#00FFFFFF" Geometry="F1M16,16L0,16 0,0 16,0z" />
<GeometryDrawing Brush="#FFFFFFFF" Geometry="F1M9.4141,8L13.9571,12.543 12.5431,13.957 8.0001,9.414 3.4571,13.957 2.0431,12.543 6.5861,8 2.0431,3.457 3.4571,2.043 8.0001,6.586 12.5431,2.043 13.9571,3.457z" />
</DrawingGroup.Children>
</DrawingGroup>
</DrawingBrush.Drawing>
</DrawingBrush>
</Rectangle.Fill>
</Rectangle>
</Viewbox>
This icon is used like this:
<Button>
<StaticResource ResourceKey="ViewboxIconClose" />
</Button>
Now my Problem:
if i use this geometry somewhere else, it will only work at one place. for example if i use this geometry in a menu, the geometry on the button will disapear in the moment, i open the menu.

Answer 1

You could use x:Shared=false to solve this but I'd probably use a style and an image instead. The image should be more efficient than a rectangle with a brush and a viewbox.
Title="MainWindow" Height="350" Width="525"
xmlns:PresentationOptions="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options"
>
<Window.Resources>
<Style x:Key="CloseIcon" TargetType="Image">
<Setter Property="Stretch" Value="Uniform"/>
<Setter Property="Source">
<Setter.Value>
<DrawingImage PresentationOptions:Freeze="True">
<DrawingImage.Drawing>
<DrawingGroup>
<GeometryDrawing Brush="#00FFFFFF" Geometry="F1M16,16L0,16 0,0 16,0z" />
<GeometryDrawing Brush="#FFFFFFFF" Geometry="F1M9.4141,8L13.9571,12.543 12.5431,13.957 8.0001,9.414 3.4571,13.957 2.0431,12.543 6.5861,8 2.0431,3.457 3.4571,2.043 8.0001,6.586 12.5431,2.043 13.9571,3.457z" />
</DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<StackPanel>
<Grid Height="100" Width="100" Background="Red">
<Image Style="{StaticResource CloseIcon}"/>
</Grid>
<Grid Height="30" Width="30" Background="Blue">
<Image Style="{StaticResource CloseIcon}"/>
</Grid>
</StackPanel>
</Grid>
With this specific requirement you could just use one geometry as data for a path. Geometries aren't visuals.