public static void Main()
{
TopLevel.Color c = TopLevel.Color.Red; // Must be qualified
TopLevel.Nested N = new TopLevel.Nested();
System.Console.WriteLine("TopLevel.Color: {0}", Enum.GetName(typeof(TopLevel.Color), c));
TopLevel.Nested.Foo();
}
static void Main(string[] args)
{
//为了从Toplevel类以外访问Color,Red,我们必须:
TopLevel.Color color = TopLevel.Color.Red;
//所有类型都可以嵌套,但只有类和结构体才能嵌套其他类型.
}
