C#继承类重写与隐藏基类方法的区别

using system;
using system.collections;

public class nevermore60customer:customer
{
public override string getfunnystring()
{
return "nevermore60.nevenmore!";
}

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public class customer
{
public virtual string getfunnystring()
{
return "plain ordinary customer.kaark!";
}
public class samplesarray
{
public static void main()
{
customer cust1=new nevermore60customer();
nevermore60customer cust2;
// cust1=new customer();
console.writeline("customer referencing customer."+cust1.getfunnystring());
cust1=new nevermore60customer();
console.writeline("customer referencing nevenmore60customer:"+cust1.getfunnystring());
cust2=new nevermore60customer();
console.writeline("nevenmore60customer referencing"+cust2.getfunnystring());

customer cust1=new nevermore60customer();
如果是重写:则,如果声明的基类对象,指向的是派生类,那么这时调用的是派生类中对基本重写的方法的方法(如上所示)
如果是隐藏基类方法: public new string getfunnystring()
{
return "nevermore60.nevenmore!";
}
则:customer cust1=new nevermore60customer();此时cust1调用的仍是声明时候的基类中的getfunnystring方法.
但二者声明与赋值都是同一个类时,不会发生这种问题.