Installer.OnBeforeUninstall Method

Raises the BeforeUninstall event.

[Visual Basic]
Protected Overridable Sub OnBeforeUninstall( _
   ByVal savedState As IDictionary _
)
[C#]
protected virtual void OnBeforeUninstall(
 IDictionary savedState
);
[C++]
protected: virtual void OnBeforeUninstall(
 IDictionary* savedState
);
[JScript]
protected function OnBeforeUninstall(
   savedState : IDictionary
);

Parameters

savedState

An IDictionary that contains the state of the computer before the installers in the Installers property uninstall their installations.

Remarks

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

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnBeforeUninstall 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 OnBeforeUninstall in a derived class, be sure to call the base class's OnBeforeUninstall 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 | OnBeforeRollback | OnCommitted