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Installer.OnBeforeRollback Method

Raises the BeforeRollback event.

[Visual Basic]
Protected Overridable Sub OnBeforeRollback( _
   ByVal savedState As IDictionary _
protected virtual void OnBeforeRollback(
 IDictionary savedState
protected: virtual void OnBeforeRollback(
 IDictionary* savedState
protected function OnBeforeRollback(
   savedState : IDictionary


An IDictionary that contains the state of the computer before the installers in the Installers property are rolled back.


This method is called before the Rollback methods of the installers in this instance's InstallerCollection are called.

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: 

See Also

Installer Class | Installer Members | System.Configuration.Install Namespace | OnAfterInstall | OnAfterRollback | OnAfterUninstall | OnCommitting | OnBeforeInstall | OnCommitted | OnBeforeUninstall