我了解 类继承和委托的代码例

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            testClass2 mytest = new testClass2();

            mytest.setValue2(100);

            mytest.PrintTxt();

            mytest.outTxt();

            Console.ReadLine();

        }
    }
}

class1: base class

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp
{
    
    public delegate void mydelegate();
    
    class testClass1
    {
        private int int1, int2;


        public int _int1
        {
            set { int1 = value; }
            get { return int1; }
        }

        public int _int2
        {
            set { int2 = value; }
            get { return int2; }
        
        }

        private void outTxt()
        {
            Console.WriteLine("int1's value is {0} ; int2's value is {1}", int1, int2);
        
        }

        public void PrintTxt()
        {
            outTxt();
        
        }

        public void setValue(int d1)
        {
            this.int1 = this.int2 = d1;
        
        }

        public testClass1()
        { }

        public testClass1(int d)
        {
            this.int1 = d;
            this.int2 = d;
        
        }

        public testClass1(int d1, int d2)
        {
            this.int1 = d1;
            this.int2 = d2;
        }

    }
}

class2: 继承类

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp
{
    class testClass2:testClass1
    {
        mydelegate thisdelegate = null;
        
        public testClass2()
            : base(12, 13)
        {
            thisdelegate = new mydelegate(outTxt);
            thisdelegate();
            thisdelegate = new mydelegate(outCustomTxt);
            thisdelegate();
        }

        public void setValue2(int d1)
        {
            this.setValue(123);
        
        }
        public void outTxt()
        {
            this.PrintTxt();
        }

        public void outCustomTxt()
        {
            Console.WriteLine("测试委托!");
        }
    }
}

打印结果:

int1's value is 12 ; int2's value is 13
测试委托!
int1's value is 123 ; int2's value is 123
int1's value is 123 ; int2's value is 123