自定义类。
using System; namespace a { public abstract class MyBase { } internal class MyClass:MyBase { } public interface IMyBaseInterface { } internal interface IMyBaseInterface2 { } internal interface IMyInterface:IMyBaseInterface,IMyBaseInterface2 { } internal sealed class MyComplexClass:MyClass,IMyInterface { } class Program { static void Main(string[] args) { MyComplexClass myObj=new MyComplexClass(); Console.WriteLine(myObj.ToString()); Console.ReadKey(); } } }