方法覆盖

abstract class BaseClass

{

  public virtual void MethodA()

{

Console.WriteLine("BaseClass");

}  

public virtual void MethodB(){}

}

class Class1:BaseClass {

  public void MethodA(){

Console.WriteLine("Class1");

}

  public override void MethodB(){}

}

class Class2:Class1 {

  new public void MethodB()

}

class MainClass {  

public static void Main(string[] args)  

{    

Class2 o=new Class2();  

   o.MethodA();    

BaseClass b = 0;   

  b.MethodA();  

}

}

输出为class1和BaseClass因为在class1中方法MethodA没被override