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Thus, when you define a resource on the Page root element, all the elements in the logical tree of the Page can access it, and you can reuse the same resource for setting the value of any property that accepts the Type that the resource represents.
In the previous example, the same resource sets two different properties: the Background of a Button, and the Fill of a Rectangle.
You can also create and access resources by using code, or interchangeably between code and Extensible Application Markup Language (XAML). Note The resource files described in this topic are different than the resource files described in WPF Application Resource, Content, and Data Files and different than the embedded or linked resources described in Managing Application Resources (. The following example defines a Solid Color Brush as a resource on the root element of a page.
The example then references the resource and uses it to set properties of several child elements, including an Ellipse, a Text Block, and a Button.
This is because such references are not reevaluated if the theme is changed by the user in realtime.