In WPF, resources are the objects that can be used anywhere in the WPF application for customization. In WPF resources are of two types namely-

1. Static Resources- These are the resources which cannot be manipulated or modified during runtime. These can be evaluated for once by the implicit element which refers during XAML loading.

2. Dynamic Resources- These are the resources which can be manipulated and modified during runtime. These resources can be evaluated during runtime.

BY Best Interview Question ON 18 Sep 2019