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Evento Installer.BeforeRollback

 

Publicado: octubre de 2016

Se produce antes de deshacerse los instaladores de la propiedad Installers.

Espacio de nombres:   System.Configuration.Install
Ensamblado:  System.Configuration.Install (en System.Configuration.Install.dll)

public event InstallEventHandler BeforeRollback

The following example demonstrates the E:System.Configuration.Install.Installer.BeforeRollback event. It overrides the M:System.Configuration.Install.Installer.Install(System.Collections.IDictionary) method and explicitly throws an T:System.ArgumentException so that the M:System.Configuration.Install.Installer.Rollback(System.Collections.IDictionary) method is called. When the M:System.Configuration.Install.Installer.Rollback(System.Collections.IDictionary) is complete, the E:System.Configuration.Install.Installer.BeforeRollback event occurs and a message is displayed.

using System;
using System.Collections;
using System.ComponentModel;
using System.Configuration.Install;

// Set 'RunInstaller' attribute to true.
[RunInstaller(true)]
public class MyInstallerClass: Installer
{
   public MyInstallerClass() :base()
   {
      // Attach the 'BeforeRollback' event.
      this.BeforeRollback += new InstallEventHandler(MyInstaller_BeforeRollBack);
      // Attach the 'AfterRollback' event.
      this.AfterRollback += new InstallEventHandler(MyInstaller_AfterRollback);
   }
   // Event handler for 'BeforeRollback' event.
   private void MyInstaller_BeforeRollBack(object sender, InstallEventArgs e)
   {
      Console.WriteLine("");
      Console.WriteLine("BeforeRollback Event occured.");
      Console.WriteLine("");        
   }
   // Event handler for 'AfterRollback' event.
   private void MyInstaller_AfterRollback(object sender, InstallEventArgs e)
   {
      Console.WriteLine("");
      Console.WriteLine("AfterRollback Event occured.");
      Console.WriteLine("");        
   }
   // Override the 'Install' method.
   public override void Install(IDictionary savedState)
   {
      base.Install(savedState);
      // Explicitly throw an exception so that roll back is called.
      throw new ArgumentException("Arg Exception");
   }
   // Override the 'Commit' method.
   public override void Commit(IDictionary savedState)
   {
      base.Commit(savedState);
   }
   // Override the 'Rollback' method.
   public override void Rollback(IDictionary savedState)
   {
      base.Rollback(savedState);
   }
   public static void Main()
   {
      Console.WriteLine("Usage : installutil.exe Installer_BeforeRollback.exe ");      
   }
}

.NET Framework
Disponible desde 1.1
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