如何在C＃中调用特定的显式声明的接口方法 [英] How to call a particular explicitly declared interface method in C#

问题描述

我对如何在以下代码中调用特定接口的方法（Say IA或IB或In ...）有疑问。请帮我解决如何打电话。我已经注释了代码行，我声明了接口方法public，在这种情况下它可以工作。当我明确声明时，我不知道如何调用它:(我正在学习C＃....

I have a doubt on how to call the method of particular interface (Say IA or IB or In...) in the following code. Please help me on how to call. I have commented the lines of code where I declare the interface methods "public" in which case it works. I dont know how to call it when I explicitly declare :( I am learning C#....

interface IA
    {
        void Display();
    }
    interface IB
    {
        void Display();
    }
    class Model : IA, IB
    {
        void IA.Display()
        {
            Console.WriteLine("I am from A");
        }
        void IB.Display()
        {
            Console.WriteLine("I am from B");
        }
        //public void Display()
        //{
        //    Console.WriteLine("I am from the class method");
        //}

        static void Main()
        {
            Model m = new Model();
            //m.Display();
            Console.ReadLine();
        }
    }

推荐答案

要调用显式接口方法，需要使用正确类型的变量，或者直接使用ca st到该接口：

To call an explicit interface method, you need to use a variable of the proper type, or directly cast to that interface:

    static void Main()
    {
        Model m = new Model();

        // Set to IA
        IA asIA = m;
        asIA.Display();

        // Or use cast inline
        ((IB)m).Display();

        Console.ReadLine();
    }

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