DoSomething

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Test {     public interface IMyInterface     {         void DoSomething();         void DoSomethingElse();     }     public class MyBaseClass : IMyInterface     {         #region IMyInterface 成员         public virtual void DoSomething()         {             Console.WriteLine("MyBaseClass中的DoSomething");         }         public virtual void DoSomethingElse()         {             Console.WriteLine("MyBaseClass中的DoSomethingElse");         }         #endregion     }     public class MyDerivedClass : MyBaseClass     {         public new void DoSomething()         {             Console.WriteLine("MyDerivedClass中的DoSomething");         }         public override void DoSomethingElse()         {             Console.WriteLine("MyDerivedClass中的DoSomethingElse");         }     }     class Program     {         static void Main(string[] args)         {             //---------------------------------------------------             MyDerivedClass d = new MyDerivedClass();             d.DoSomething();             Console.WriteLine(new String('-', 50));             //---------------------------------------------------             MyBaseClass mybase = new MyBaseClass();             mybase.DoSomething();             Console.WriteLine(new String('-', 50));             //---------------------------------------------------             IMyInterface im = d;             im.DoSomething();             Console.WriteLine(new String('-', 50));             //---------------------------------------------------             //im = mybase;             //im.
            Console.ReadKey();         }     } }