Installer.Rollback Method
When overridden in a derived class, restores the pre-installation state of the computer.
Assembly: System.Configuration.Install (in System.Configuration.Install.dll)
'Declaration Public Overridable Sub Rollback ( _ savedState As IDictionary _ ) 'Usage Dim instance As Installer Dim savedState As IDictionary instance.Rollback(savedState)
Parameters
- savedState
- Type: System.Collections.IDictionary
An IDictionary that contains the pre-installation state of the computer.
| Exception | Condition |
|---|---|
| ArgumentException | The savedState parameter is Nothing. -or- The saved-state IDictionary might have been corrupted. |
| InstallException | An exception occurred during the Rollback phase of the installation. This exception is ignored and the rollback continues. However, the computer might not be fully reverted to its initial state after the rollback completes. |
When you override the Rollback method in a derived class, be sure to call the base class's Rollback method first in your derived method. A rollback operation restores the computer to the state it was in before the installations occurred. The Rollback method is called if the Install method of this instance of Installer, or any installer in the installer collection, fail to run correctly. Any exceptions generated by calling the Rollback methods of the installers in the installer collection are ignored and the rollback of the other installers continues.
- 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.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.