Use OpenFileDialog and FileBrowserDialog in WPF

WPF does not contain a OpenFileDialog or FileBrowserDialog. Nevertheless, I needed them in a WPF application. Searching the web, I found several approaches. One published on GitHub (https://github.com/tillias/wpFolderPicker) implements a new control for folder browsing. But I wanted a “cheap” solution. And found the starting point here: WPF OpenFileDialog and …