Introduction Here in this article we are discussing that how can you close a Popup on Button click in WPF. A Popup is a new primitive control in the WPF framework. A Popup is considered as a container that appears suddenly when some action is taken. A Popup window floats over a page or window providing functionality for some quick action. Popups are represented by the Popup class. The implementation of example needs StackPanel, DockPanel, Popup and Button control. Getting Started