隐藏/隐藏方法 [英] Hiding /Shadowing of the methods

问题描述

class Program
    {
        static void Main(string[] args)
        {
            IInterface interfaceFromBase = new Base();

            Console.WriteLine(interfaceFromBase.test());

            Console.WriteLine(interfaceFromBase.test1());



            IInterface interfaceFromDerived = new Derived();

            Console.WriteLine(interfaceFromDerived.test());

            Console.WriteLine(interfaceFromDerived.test1());



            Console.ReadLine();
        }
    }

    interface IInterface
    {

        string test();

        string test1();

    }



    class Base : IInterface
    {

        public string test()
        {

            return "Test: I'm in Base";

        }



        public string test1()
        {

            return "Test1: I'm in Base";

        }

    }

    class Derived : Base ,IInterface
    {

        public new string test()
        {

            return "Test: I'm in Derived";

        }

    }

上面函数的输出是
测试:我在基地
Test1:我在基地
测试:我在派生
Test1:我在基地

如果仅从Base派生Derived类，则输出将为
测试:我在基地
Test1:我在基地
测试:我在基地
Test1:我在基地

The output of the above function is
Test: I''m in Base
Test1: I''m in Base
Test: I''m in Derived
Test1: I''m in Base

If the Derived class is to be derived from Base only then the output would be
Test: I''m in Base
Test1: I''m in Base
Test: I''m in Base
Test1: I''m in Base

Would anyone please give me the difference?

推荐答案

您遇到的是new和override之间的区别.顺便说一句:后者要求将基类方法声明为virtual.

建议您阅读所有这些关键字.

:)

you are experiencing the difference between new and override. BTW: The latter requires the base class method to be declared virtual.

I suggest you read up on all these keywords.

:)

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