C# 构造函数中调用虚函数

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mb5ff592e69e4d8 2016-11-11 18:39:00

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

class Test
{
    public class Base
    {
        public Base()
        {
            System.Console.WriteLine("Base.Base");
            ABitDangerousCall();
        }

        public virtual void ABitDangerousCall()
        {
            System.Console.WriteLine("Base.ABitDangerousCall");
        }

        private class Inner
        {
            public Inner()
            {
                System.Console.WriteLine("Base.Inner.Inner");
            }
        }
        private Inner inner = new Inner();
    }

    class Derived : Base
    {
        public Derived()
        {
            System.Console.WriteLine("Derived.Derived");
            ctorInitializedMember = 5;
        }

        // ctorInitializedMember is default initialized to zero before the constructor initializes it.
        private int ctorInitializedMember;
        private int derivedInt;

        public override void ABitDangerousCall()
        {
            System.Console.WriteLine(String.Format("Derived.ABitDangerousCallctorInitializedMember={0} derivedInt={1}", ctorInitializedMember, derivedInt));
        }

        private class Inner
        {
            public Inner()
            {
                System.Console.WriteLine("Derived.Inner.Inner");
            }
        }
        private Inner inner = new Inner();
    }


    class Program
    {
        static void Main(string[] args)
        {
            Derived d = new Derived();
            Console.Read();
        }
    }

}