ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework Namespace / PaneCollection Class / CloseAllPanes Method

CloseAllPanes Method
Close all open panes.
Syntax
public void CloseAllPanes()
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also