C#中new和override区别

 public class GrandClass   //基类
 {   
 public GrandClass()   
 {   
 Console.WriteLine("In GrandClass.Constructor");   
 }   
 public virtual void Method()   //用virtual才可以在子类中用override,而new不需要这样 
 {   
 Console.WriteLine("In GrandClass.Method()");   
 }   
 }   
 
 public class ParentClass:GrandClass   //继承基类,看看override状态
 {   
 public ParentClass()   
 {   
 Console.WriteLine("In ParentClass.Constructor");   
 }   
 public override void Method()   //使用override,是说把基类的方法重新定义
 {   
 Console.WriteLine("In ParentClass.Method() use override");   
 }   
 }   
 
 public class NewParentClass:GrandClass   //继承基类,看看new状态 
 {   
 public NewParentClass()   
 {   
 Console.WriteLine("In NewParentClass.Constructor");   
 }   
 new public void Method()   //使用new,不是说用到基类的方法,而是重新定义一个子类方法,只不过,方法名称与基类相同 
 {   
 Console.WriteLine("In NewParentClass.Method()");   
 }   
 }  

  static void Main()    
 {   
 GrandClass Parent=(GrandClass)   new ParentClass();   //用override子类加框一个基类对象句柄
 Parent.Method();   
 GrandClass NewParent=(GrandClass)   new NewParentClass();   //用new子类加框一个基类对象句柄 
 NewParent.Method();   
 NewParentClass NewParent1=   new NewParentClass();   //一个子类句柄
 NewParent1.Method();   
 }  

  [1]In GrandClass.Constructor   
 [2]In ParentClass.Constructor   
 [3]In ParentClass.Method() use override   
 [4]In GrandClass.Constructor   
 [5]In NewParentClass.Constructor   
 [6]In GrandClass.Method()   
 [7]In GrandClass.Constructor   
 [8]In NewParentClass.Constructor   
 [9]In NewParentClass.Method()