About Windows Presentation Foundation (WPF)
Windows Presentation Foundation, or WPF, is a user interface framework. The components of a user interface are referred to as controls and include Label, TextBox, Button, and so on.
Before WPF can be used, the PresentationFoundation assembly must be loaded. The assembly can be loaded using Add-Type. This command is required once in each PowerShell session that intends to use WPF:
Add-Type -AssemblyName PresentationFramework
A WPF user interface typically defines all or most of the visible components in an Extensible Application Markup Language (XAML) document.
