public class Person  //基類、等同于public class Person：Object
    {

        public string name;
        public uint age;

        public Person(string name,uint age)//基類的構造函數
        {
            this.name = name; //this 關鍵字引用類的當前實例
            this.age = age; //this 關鍵字引用類的當前實例
        }

        public virtual void GetInfo()
        {
            Console.WriteLine("Name: {0}",name);
            Console.WriteLine("Age:{0}",age);
        }
    }

    public class Student:Person//派生類
    {

        public string studentId;

        //派生類構造函數并用:base調用基類構造函數
        public Student(string name,uint age,string studentId):base(name,age)
        {
            this.studentId = studentId;
        }

        public override void GetInfo()
        {
            //調用基類方法
            base.GetInfo();

            Console.WriteLine("StudentId: {0}",studentId);
        }

    }

   public class Program
    {

        static void Main(string[] args)
        {

            Student objstudent=new Student("jeamsluu",99,"20140101011");
            objstudent.GetInfo();
            Console.ReadKey();
        }
    }
}