Using shared resources

When building graphical UIs, you will often want to use a resource, such as a brush to paint the background of controls or an instance of a class to perform custom conversions. Resources can be defined at the following levels and shared with everything at that level or lower:

• Application
• Page
• Control

Defining resources to share across an app

A good place to define shared resources is at the app level, so let’s see how to do that:

1. In the Resources folder, in the Styles folder, add a new .NET MAUI Resource Dictionary (XAML) project item named Northwind.xaml.

   Visual Studio Code and JetBrains Rider do not have project item templates for MAUI. You can create this item using the CLI, as shown in the following command:

   dotnet new maui-dict-xaml --name Northwind.xaml
   

2. Add markup inside the existing ResourceDictionary element to define a linear gradient brush with a key of Rainbow...