Installer.OnCommitting(IDictionary) 方法

定義

引發 Committing 事件。Raises the Committing event.

protected:
 virtual void OnCommitting(System::Collections::IDictionary ^ savedState);
protected virtual void OnCommitting (System.Collections.IDictionary savedState);
abstract member OnCommitting : System.Collections.IDictionary -> unit
override this.OnCommitting : System.Collections.IDictionary -> unit
Protected Overridable Sub OnCommitting (savedState As IDictionary)

參數

savedState
IDictionary

IDictionary,包含 Installers 屬性中的安裝程式被認可之前的電腦狀態。An IDictionary that contains the state of the computer before the installers in the Installers property are committed.

範例

下列範例示範OnCommitting Installer類別的方法。The following example demonstrates the OnCommitting method of the Installer class. OnCommitting方法會在衍生類別中覆寫。The OnCommitting method is overridden in the derived class. 提供空間給使用者, 以新增要在認可之前和認可之後執行的步驟。Space is provided for the user to add the steps to be performed before committing and after committing.

   // Override the 'OnCommitting' method.
protected:
   virtual void OnCommitting( IDictionary^ savedState ) override
   {
      Installer::OnCommitting( savedState );
      
      // Add steps to be done before committing an application.
      Console::WriteLine( "The OnCommitting method of MyInstaller called" );
   }
// Override the 'OnCommitting' method.
protected override void OnCommitting(IDictionary savedState)
{
   base.OnCommitting(savedState);
   // Add steps to be done before committing an application.
   Console.WriteLine("The OnCommitting method of MyInstaller called");
}
' Override the 'OnCommitting' method.
Protected Overrides Sub OnCommitting(savedState As IDictionary)
   MyBase.OnCommitting(savedState)
   ' Add steps to be done before committing an application.
   Console.WriteLine("The OnCommitting method of MyInstaller called")
End Sub

備註

這個方法是在Commit InstallerCollection執行此實例的安裝程式方法之前呼叫。This method is called before the Commit methods of the installers in this instance's InstallerCollection run.

引發事件會透過委派叫用此事件處理常式。Raising an event invokes the event handler through a delegate. 如需詳細資訊, 請參閱處理和引發事件For more information, see Handling and Raising Events.

OnCommitting方法可讓衍生類別處理事件, 而不需要附加委派。The OnCommitting method allows derived classes to handle the event without attaching a delegate. 這是在衍生類別中處理事件的慣用技巧。This is the preferred technique for handling the event in a derived class.

給繼承者的注意事項

當在衍生類別中覆寫 OnCommitting(IDictionary) 時,請確定呼叫基底類別的 OnCommitting(IDictionary) 方法,使已註冊的委派能接收到事件。When overriding OnCommitting(IDictionary) in a derived class, be sure to call the base class's OnCommitting(IDictionary) method so that registered delegates receive the event.

適用於

另請參閱