虚方法与重写方法的问题

Question

代码如下：
class Program
    {
        static void Main(string[] args)
        {
             
            DerivedFromBad b = new DerivedFromBad();
            b.doSomething();
            System.Console.ReadKey();
            // Outputs: ABC is less than abc
        }
     
    }
    public class BadBaseClass
    {
        
        public void doSomething()
        {
            this.SetState();
        }
        public virtual void SetState()
        {
            Console.WriteLine("BadBaseClass");        }
    }    public class DerivedFromBad : BadBaseClass
    {
        public override void SetState()
        {
            Console.WriteLine("DerivedFromBad ");
        }    }结果显示： DerivedFromBad如果我想在 BadBaseClass.doSomething方法调用 自身的 SetState()方法要怎么办。
也就是结果要为：BadBaseClass

Answer 1

 class Program
    {
        static void Main(string[] args)
        {            //DerivedFromBad b = new DerivedFromBad(); 
            BadBaseClass b = new BadBaseClass();
            b.doSomething();
            System.Console.ReadKey();
            
        }    }
    public class BadBaseClass
    {        public void doSomething()
        {
            this.SetState();
        }
        public virtual void SetState()
        {
            Console.WriteLine("BadBaseClass");        }
    }    public class DerivedFromBad : BadBaseClass
    {
        public override void SetState()
        {
            Console.WriteLine("DerivedFromBad ");
        }    } 

Answer 2

那就不能用virtual 和override 
好像要用new来覆盖

Answer 3

or...
  class Program
    {
        static void Main(string[] args)
        {            
            BadBaseClass b = new DerivedFromBad();
            b.doSomething();
            System.Console.ReadKey();
            
        }    }
    public class BadBaseClass
    {        public void doSomething()
        {
            this.SetState();
        }
        public  void SetState()
        {
            Console.WriteLine("BadBaseClass");        }
    }    public class DerivedFromBad : BadBaseClass
    {
        public new void SetState()
        {
            Console.WriteLine("DerivedFromBad ");
        }    } 

Answer 4

    using System;    class Program 
    { 
        static void Main(string[] args) 
        { 
            
            DerivedFromBad b = new DerivedFromBad(); 
            b.doSomething(); 
            System.Console.ReadKey(); 
        } 
    
    }     public class BadBaseClass 
    { 
        public void doSomething() 
        { 
            this.SetState(); 
        }         public virtual void SetState() 
        { 
            Console.WriteLine("BadBaseClass"); 
        } 
    }     public class DerivedFromBad : BadBaseClass 
    { 
        public new void SetState() 
        { 
            Console.WriteLine("DerivedFromBad "); 
        } 
    } 

Answer 5

or...
 class Program
    {
        static void Main(string[] args)
        {
            DerivedFromBad b = new DerivedFromBad();
            b.doSomething();
            System.Console.ReadKey();
            
        }    }
    public class BadBaseClass
    {        public void doSomething()
        {
            this.SetState();
        }
        public  void SetState()
        {
            Console.WriteLine("BadBaseClass");        }
    }    public class DerivedFromBad : BadBaseClass
    {
        public new  void SetState()
        {
            Console.WriteLine("DerivedFromBad ");
        }    }    // 输出：BadBaseClass

Answer 6

如果是vb.net的话，可以用
public sub doSomething()
MyClass.SetState()
end sub
（给个很绕口的名字：虚方法的非虚调用）

Answer 7

or...
class Program
    {
        static void Main(string[] args)
        {
            DerivedFromBad b = new DerivedFromBad();
            b.doSomething();
            System.Console.ReadKey();
            
        }    }
    public class BadBaseClass
    {        public void doSomething()
        {
            this.SetState();
        }
        public  virtual void SetState()
        {
            Console.WriteLine("BadBaseClass");        }
    }    public class DerivedFromBad : BadBaseClass
    {
        public new  void SetState()
        {
            Console.WriteLine("DerivedFromBad ");
        }    }    // 输出：BadBaseClass

Answer 8

楼上的通过new改的话，子类的dosomething就不能调用子类自身的SetState