listVirtual = new ArrayList();
                Assembly assembly = Assembly.GetExecutingAssembly();
                Type[] typeArray = assembly.GetTypes();

                foreach (Type item in typeArray)
                {
                    if (item.BaseType != null && item.BaseType.FullName != null && item.BaseType.FullName.Contains("WebVirtual"))
                        listVirtual.Add(Activator.CreateInstance(item));
                }