Defining style for GeometryDrawing

Question

Please do not mark it as duplicate. The linked question is simply different from what I'm asking.

I need to set Pen and Brush properties for around 180+ GeometryDrawing objects. My first thought was to use a Style for it, but I learned that Style cannot target GeometryDrawing because it does not inherit from FrameworkElement. I then considered creating my own GeometryDrawing2 that inherits from GeometryDrawing and setting Pen and Brush in the constructor, but found that GeometryDrawing is sealed and can't be inherited.

What is the best way of achieving what I want other than copy-pasting the properties 180 times?

Edit

Here is my collection of drawings:

<ResourceDictionary>
  <DrawingImage x:Key="Drawing1">
    <DrawingImage.Drawing>
      <GeometryDrawing Geometry="..." />
    </DrawingImage.Drawing>
  </DrawingImage>

  <DrawingImage x:Key="Drawing2">
    <DrawingImage.Drawing>
      <GeometryDrawing Geometry="..." />
    </DrawingImage.Drawing>
  </DrawingImage>

  <!--180 more such drawings-->
</ResourceDictionary>

I need to set Brush and Pen for each of the GeometryDrawing objects to say Red and Black. The usual clean way in XAML is to do this through Style, but as I explained above, that doesn't work for GeometryDrawing. The only other way is to copy-paste Brush="{StaticResource MyBrush}" and Pen="{StaticResource MyPen}" to each of the 180+ GeometryDrawing objects. Or is there a faster (XAML-only) way?

Unclear what you mean. Where are you copy/pasting properties? How are you storing the `GeometryDrawing` objects? Why aren't they in a collection that you could enumerate and assign the values that way? Please improve your question so it's clear what you're doing now and what you'd like to be able to do instead, making sure to include a good [mcve] that illustrates all of that. — Peter Duniho, Aug 10 '17 at 06:25
Possible duplicate of [In WPF Style, How can I change defined color?](https://stackoverflow.com/questions/23880582/in-wpf-style-how-can-i-change-defined-color) — Funk, Aug 10 '17 at 07:51
@Funk Sure, but apparently you haven't read the body. As OP has realized, you can't define a Style for a GeometryDrawing. The question you've linked asks for something completely different than this one. — Clemens, Aug 10 '17 at 09:37

score 1 · Accepted Answer · answered Aug 10 '17 at 08:01

Your question is still incomplete, lacking a good Minimal, Complete, and Verifiable code example to work with. But, based on the information you've provided so far, I would expect a template-based implementation to solve your problem. For example:

<ResourceDictionary>
  <PathGeometry x:Key="geometry1">...</PathGeometry>
  <PathGeometry x:Key="geometry2">...</PathGeometry>
  <!-- etc. -->

  <DataTemplate DataType="{x:Type PathGeometry}">
    <DrawingImage>
      <DrawingImage.Drawing>
        <GeometryDrawing Geometry="{Binding}" Pen="..." Brush="..."/>
      </DrawingImage.Drawing>
    </DrawingImage>
  </DataTemplate>
</ResourceDictionary>

Then when you want to display one of those, just use a ContentControl or ContentPresenter. For example:

<ContentControl Content="{StaticResource geometry1}"/>

Fair enough. That apparently solves the problem at hand. Thanks a lot. — dotNET, Aug 10 '17 at 10:51

Defining style for GeometryDrawing

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