C#继承示例

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ProgramCall

{

    class BaseClass

    {

       //Method to find Mul of Two numbers

        public int FindMul(int x, int y)

        {

            return (x * y);

        }

        //method to print given 2 numbers

        //When declared protected , can be accessed only from inside the derived class

        //cannot access  with the instance of  derived class

        protected void Print(int x, int y)

        {

            Console.WriteLine("First Number: " + x);

            Console.WriteLine("Second Number: " + y);

        }

         }

        class Derivedclass : BaseClass

        {

        public void Print3numbers(int x, int y, int z)

        {

            Print(x, y); //We can directly call baseclass members

            Console.WriteLine("Third Number: " + z);

        }

    }

    class MainClass

    {

        static void Main(string[] args)

        {

            //为派生类创建实例，以便基类成员

            //这是可行的，因为派生类Derivedclass继承自基类

            Derivedclass of = new Derivedclass();

            of.Print3numbers(3,5,7); //调用内部基类的方法

            int Mul = of.FindMul(3,5); //使用派生类实例调用基类方法

            Console.WriteLine("Mul : " + Mul);

            Console.Read();

        }

    }

}

继承是面向对象编程的重要概念之一。
继承是我们可以将基类的属性或者方法继承到派生类中的过程。
在声明类和基类时，通过在派生类之后放置冒号来完成：

例如：

public class A  (base class)

{

    public A() { }

}

 

public class B : A  (derived class : base class)

{

    public B() { }

}

C#继承语法

[Access Modifier] class ClassName : baseclassname

 

{

  

}