Installer.OnBeforeRollback(IDictionary) Method
Definition
Important
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Raises the BeforeRollback event.
protected:
virtual void OnBeforeRollback(System::Collections::IDictionary ^ savedState);protected virtual void OnBeforeRollback (System.Collections.IDictionary savedState);abstract member OnBeforeRollback : System.Collections.IDictionary -> unit
override this.OnBeforeRollback : System.Collections.IDictionary -> unitProtected Overridable Sub OnBeforeRollback (savedState As IDictionary)Parameters
- savedState
- IDictionary
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 Handling and Raising Events.
The OnBeforeRollback method 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(IDictionary) in a derived class, be sure to call the base class's OnBeforeRollback(IDictionary) method so that registered delegates receive the event.
