Raises the BeforeRollback event.
[Visual Basic] Protected Overridable Sub OnBeforeRollback( _ ByVal savedState As IDictionary _ ) [C#] protected virtual void OnBeforeRollback( IDictionary savedState ); [C++] protected: virtual void OnBeforeRollback( IDictionary* savedState ); [JScript] protected function OnBeforeRollback( savedState : IDictionary );
- An IDictionary that contains the state of the computer before the installers in the Installers property are rolled back.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnBeforeRollback method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors: When overriding OnBeforeRollback in a derived class, be sure to call the base class's OnBeforeRollback method so that registered delegates receive the event.
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
.NET Framework Security:
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries From Partially Trusted Code