Installer.BeforeUninstall Event

public event InstallEventHandler BeforeUninstall

/** @event */
public void add_BeforeUninstall (InstallEventHandler value)

/** @event */
public void remove_BeforeUninstall (InstallEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

// MyInstaller is derived from the class 'Installer'.
MyInstaller() : base()
{
   BeforeUninstall += new InstallEventHandler(BeforeUninstallEventHandler);

private void BeforeUninstallEventHandler(object sender, InstallEventArgs e)
{
   // Add steps to perform any actions before the Uninstall process.
   Console.WriteLine("Code for BeforeUninstallEventHandler"); 

// MyInstaller is derived from the class 'Installer'.
MyInstaller()
{
    this.add_BeforeUninstall(
        new InstallEventHandler(BeforeUninstallEventHandler));
 //MyInstaller

private void BeforeUninstallEventHandler(Object sender, InstallEventArgs e)
{
    // Add steps to perform any actions before the Uninstall process.
    Console.WriteLine("Code for BeforeUninstallEventHandler");
 //BeforeUninstallEventHandler