This property is only used if the CanCancel is true, which indicates that the operation supports being cancelled, and if DisplayMessage is set to false. Otherwise if the message is shown and the operation may be cancelled then whether the operation is cancelled will be based upon the users response to the prompt.
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