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InstallEventArgs Class

Namespace:  System.Configuration.Install
Assembly:  System.Configuration.Install (in System.Configuration.Install.dll)

public class InstallEventArgs : EventArgs

InstallEventArgs contains an IDictionary that holds information about the current state of the installation. The BeforeInstall, AfterInstall, Committing, Committed, BeforeRollback, AfterRollback, BeforeUninstall, and AfterUninstall event handlers use this information.

The following example demonstrates the InstallEventArgs constructors and the SavedState property of the InstallEventArgs class.

There are two new events called BeforeCommit and AfterCommit. The handlers of these events are invoked from the protected methods named OnBeforeCommit and OnAfterCommit respectively. These events are raised when the Commit method is called.

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

public class MyInstaller : Installer
   // Simple events to handle before and after commit handlers. 
   public event InstallEventHandler BeforeCommit;
   public event InstallEventHandler AfterCommit;

   public MyInstaller()
      // Add handlers to the events.
      BeforeCommit += new InstallEventHandler(BeforeCommitHandler);
      AfterCommit += new InstallEventHandler(AfterCommitHandler);

   public override void Install(IDictionary savedState)
      Console.WriteLine("Install ...\n");

   public override void Commit(IDictionary savedState)
      Console.WriteLine("Before Committing ...\n");
      // Call the 'OnBeforeCommit' protected method.
      Console.WriteLine("Committing ...\n");
      // Call the 'OnAfterCommit' protected method.
      Console.WriteLine("After Committing ...\n");

   public override void Rollback(IDictionary savedState)
      Console.WriteLine("RollBack ...\n");

   public override void Uninstall(IDictionary savedState)
      Console.WriteLine("UnInstall ...\n");

   // Protected method that invoke the handlers associated with the 'BeforeCommit' event. 
   protected virtual void OnBeforeCommit(IDictionary savedState)
      if(BeforeCommit != null)
         BeforeCommit(this, new InstallEventArgs(savedState)); 

   // Protected method that invoke the handlers associated with the 'AfterCommit' event. 
   protected virtual void OnAfterCommit(IDictionary savedState)
      if(AfterCommit != null)
         AfterCommit(this, new InstallEventArgs());

   // A simple event handler to exemplify the example. 
   private void BeforeCommitHandler(Object sender, InstallEventArgs e)
      Console.WriteLine("BeforeCommitHandler event handler has been called\n");
      Console.WriteLine("The count of saved state objects are : {0}\n",

   // A simple event handler to exemplify the example. 
   private void AfterCommitHandler(Object sender, InstallEventArgs e)
      Console.WriteLine("AfterCommitHandler event handler has been called\n");


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0