Set control Background color using Dynamic Resource in WPF?

Question

This is my XAML

Answer 1

A2: no. To do what you are doing, it is better to use data binding. Have a property in your viewmodel indicating whether it's 'loaded', then bind the background to it with a suitable converter, or use a trigger. (If it's actually UI that is loading, add the property to the window.) Dynamic resources are used for theming and with templates, in the rare cases when a StaticResource lookup happens too early.