public static void Main()
Console.WriteLine("A null object:");
Console.WriteLine("\nAn object initialized with Yes:");
IsValueYes(new Wrapper { value = AnEnum.Yes });
Console.WriteLine("\nAn object initialized with No:");
IsValueYes(new Wrapper { value = AnEnum.No });
public static void IsValueYes(Wrapper item)
if (item?.value == AnEnum.Yes)
Console.WriteLine("The value is Yes.");
Console.WriteLine("The value is not Yes.");
public AnEnum value { get; set; }