UWP set Font Family code example
Example 1: external font family uwp c#
FontFamily="Assets/Fonts/ArimaMadurai-Black.ttf#Arima Madurai"
//or
FontFamily="Assets/Fonts/ArimaMadurai-Black.ttf#Arima Madurai Black"
Example 2: external font family uwp c#
FontFamily="[FontFilePath]#[FontName]"