小编red*_*red的帖子

我有类似这样的课程

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            A a = new C();

            a.method();
            Console.ReadLine();
        }
    }

    public class A
    {
        public virtual void method()
        {
            Console.WriteLine("METHOD FROM A");
        }
    }

    public class B : A { }

    public class C : B
    {
        public override void method()
        {
            Console.WriteLine("METHOD FROM C");
        }
    }
}

它工作正常,打印"METHOD FROM C"

但

如果我有这样的情况

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            A a = new C(); …