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InstallEventArgs Class

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


public class InstallEventArgs : EventArgs


Initializes a new instance of the InstallEventArgs class, and leaves the SavedState property empty.


Initializes a new instance of the InstallEventArgs class, and specifies the value for the SavedState property.


Gets an IDictionary that represents the current state of the installation.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

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");

.NET Framework
Available since 1.1

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

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