Hey there! VFarkas Thats a great question and thanks for posting it on QandA platform I guess the WPF doesn't support SVG files out of the box, but you can use a handy library called "SvgImageSource" to make it happen. First things first, you'll need to install the "SvgImageSource" package via NuGet.
xmlns:svg="clr-namespace:SvgImageSource;assembly=SvgImageSource"
Then, in your XAML code, you can simply use the "SvgImage" control
<svg:SvgImage x:Name="svgImage" Source="YourSvgFile.svg"/>
And that's it! If this helps kindly accept the answer thanks much.