Installer.OnBeforeRollback Method

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
);

Parameters

savedState

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

Remarks

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.

Requirements

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

See Also

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