[转] C# 隐藏方法和重写方法

class BaseClass
      {
         public void functionA()
          {
              Console.WriteLine("BaseFunctionA ===");
          }
          public virtual void functionB()
          {
              Console.WriteLine("BaseFunctionB ===");
         }
     }
     class DerivedClass : BaseClass
     {
         new public void functionA()
         {
             Console.WriteLine("DerivedFunctionA ===");
         }
         public override void functionB()
         {
             Console.WriteLine("DerivedFunctionB ===");
         }
     }
    class Program
    {
        static void Main(string[] args)
        {
            BaseClass b2 = new DerivedClass();
            b2.functionA();//BaseFunctionA ===
            b2.functionB();//DerivedFunctionB ===
            Console.WriteLine("-----");
            BaseClass b = new BaseClass();
            b.functionA();//BaseFunctionA ===
            b.functionB();//BaseFunctionB ===
            Console.WriteLine("-----");
            DerivedClass d = new DerivedClass();
            d.functionA();//DerivedFunctionA ===
            d.functionB();//DerivedFunctionB ===
            Console.WriteLine("-----");
        }      
    }