c# 修饰符“public”对该项无效

Question

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace Test10_3{interface ImyInterface1{int Add();}interface ImyInterface2{int Add();}class Myclass:ImyInterface1,ImyInterface2{public int ImyInterface1.Add(){int x = 3;int y = 7;return x + y;}public int ImyInterface2.Add(){int x = 3;int y = 7;int z = 5;return x + y + z;}}class Program{static void Main(string[] args){Myclass myclass = new Myclass();ImyInterface1 imyinterface1 = myclass;ImyInterface2 imyinterface2 = myclass;Console.WriteLine(imyinterface1.Add());Console.WriteLine(imyinterface2.Add());Console.ReadLine();}}}代码如上，报错行标黄

Answer 1

显示接口成员实现中不能包含访问修饰符。

显示接口成员属于接口的成员，不属于类的成员。只能通过接口对象来访问。