接口中的 C# |继承

原文:https://www . geeksforgeeks . org/c-sharp-接口继承/

C# 允许用户将一个界面继承到另一个界面。当一个类实现继承的接口时,它必须提供接口继承链中定义的所有成员的实现。 要点:

  • 如果一个实现了一个接口,那么就需要实现该接口定义的所有方法,包括基本接口方法。否则,编译器会抛出一个错误。
  • 如果派生接口和基接口都声明了同一个成员,则基接口成员名被派生接口成员名隐藏。

语法:

// declaring an interface
access_modifier interface interface_name 
{
   // Your code
}

// inheriting the interface
access_modifier interface interface_name : interface_name
{
    // Your code
}

例 1:

c sharp . c sharp . c sharp . c sharp

// C# program to illustrate the concept
// of inheritance in interface
using System;

// declaring an interface
public interface A {

    // method of interface
    void mymethod1();
    void mymethod2();
}

// The methods of interface A
// is inherited into interface B
public interface B : A {

    // method of interface B
    void mymethod3();
}

// Below class is inheriting
// only interface B
// This class must
// implement both interfaces
class Geeks : B
{

    // implementing the method
    // of interface A
    public void mymethod1()
    {
        Console.WriteLine("Implement method 1");
    }

    // Implement the method
    // of interface A
    public void mymethod2()
    {
        Console.WriteLine("Implement method 2");
    }

    // Implement the method
    // of interface B
    public void mymethod3()
    {
        Console.WriteLine("Implement method 3");
    }
}

// Driver Class
class GFG {

    // Main method
    static void Main(String []args)
    {

        // creating the object
        // class of Geeks
        Geeks obj = new Geeks();

        // calling the method
        // using object 'obj'
        obj.mymethod1();
        obj.mymethod2();
        obj.mymethod3();
    }
}

Output: 

Implement method 1
Implement method 2
Implement method 3

例 2:

c sharp . c sharp . c sharp . c sharp

// C# program to illustrate the concept
// of inheritance in the interface
using System;

// declaring an interface
public interface Votes
{

    // method of interface
    void vote_no(int a);
}

// The methods of interface Votes
// is inherited into interface Details
public interface Details : Votes
{

    // method of interface Details
    void detailsofauthor(string n, int p);
}

// Below class is inheriting
// the interface Details
// This class must implement
// the methods of both interface
// i.e. Votes and Details
class TechinalScriptWriter : Details
{

    // implementing the method
    // of interface Votes
    public void vote_no(int a)
    {
        Console.WriteLine("Total number of votes is: {0}", a);
    }

    // implementing the method
    // of interface Details
    public void detailsofauthor(string n, int p)
    {
        Console.WriteLine("Name of the author is: {0}", n);

        Console.WriteLine("Total number of published" +
                                " article is: {0}", p);
    }
}

// Driver Class
class GFG {

    // Main method
    static void Main()
    {

        // Creating the objects of
        // TechinalScriptWriter class
        TechinalScriptWriter obj = new TechinalScriptWriter();

        // calling the methods by passing
        // the required values
        obj.vote_no(470045);
        obj.detailsofauthor("Siya", 98);
    }
}

Output: 

Total number of votes is: 470045
Name of the author is: Siya
Total number of published article is: 98