using System;
using System.Runtime.InteropServices;
using Microsoft.VisualStudio.Setup.Configuration;

class A {
  public static void Main(string[] args) {
    Console.WriteLine("Creating instance of SetupConfiguration");
    SetupConfiguration setup = new SetupConfiguration();
    Console.WriteLine("Created instance of SetupConfiguration");

    var a = setup.EnumAllInstances();
    ISetupInstance[] b = new ISetupInstance[1];
    while (true) {
      a.Next(1, b, out _);
      if (b[0] == null)
        break;

      ISetupInstance c = b[0];
      Console.WriteLine("Instance - " + c.GetDisplayName());
    }
  }
}