'Declaration Public ReadOnly Property AsyncOptions As AsyncOptions
public AsyncOptions AsyncOptions {get;}
That property has effect only if AsyncMode is On and only for Tabs which ContentPanes have child controls.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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