'Declaration Public ReadOnly Property TabCloseAction As MdiTabCloseAction
public MdiTabCloseAction TabCloseAction {get;}
When a tab is closed, using the MdiTab.Close method or via the user interface (using the close button or context menu), the TabCloseAction determines the action that will be taken on the Form associated with the tab. By default the associated Form is closed. When a form is closed, the tab associated with the form is also released. If the form is only hidden, the MdiTab is removed from the TabGroup it is associated with and added to the HiddenTabs collection of the UltraTabbedMdiManager. When set to None, no action is taken but the TabClosing and TabClosed events are still invoked.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2