Fonts

Fonts (v3.0.0 and later)

In versions prior to 3.0.0 the only way to reference the bundled Roboto font was as a packed resource using:

FontFamily="pack://application:,,,/MaterialDesignThemes.Wpf;component/Resources/Roboto/#Roboto"

With version 3.0.0 this has been greatly simplified using the new MaterialDesignFont markup extension. Now you can simply reference the font using:

xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
[...]
FontFamily="{materialDesign:MaterialDesignFont}" 

Include font files (v3.0.0 and later)

If you would prefer to have the Roboto font files included in your project rather than just as embedded resources inside of the material design library you can add a new property to your project.

First edit your csproj file and add the following inside of the <Project> element.

<PropertyGroup>
  <IncludeMaterialDesignFont>True</IncludeMaterialDesignFont>
  <MaterialDesignFontDirectory>Resources\Roboto\</MaterialDesignFontDirectory>
</PropertyGroup>

Then rebuild your project. In your output directory, you will see the font font show up under a Resources\Roboto directory. Depending on which version of the csproj you are using, you may also see the files show up in the folder inside of your solution explorer.

More details and discussion on this can be found in Issue 746