Step by step: adding consistent styles to a XAML app
XAML has a useful feature where you can set up a single file with a bunh of "style" configuration for your XAML (UWP) app, and then use those styles everywhere in your app. The plus side is having a centralized style configuration: all your titles can be one size, and all your technical text has the correct font, and all. The downside is that getting it set up is buried in a blizzard of docs. There's a lot of ways to set up your XAML styles, and Microsoft wants you to fully understand each of them in isolation.
In this simple blog post, I walk through the steps of one way to add centralized styles to your app and then be able to use them everywhere.
Create an AppDictionary.xaml file. In your project, Add > New and add a XAML ResourceDictionary. Call is AppDictionary.xaml.
Add your first style. I tend to prefix all my centralized styles with a small "s" like "sTitle".
<Style x:Key="sTitle" TargetType="TextBlock">
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="FontSize" Value="24" />
</Style>
