using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication3
{
    class Program
    {
        static void Main(string[] args)
        {
            Student s = new Student();
            s.Age = 1000;
            Console.WriteLine("123");
        }
    }

    class Student
    {
        private int age;

        public int Age
        {
            get { return age; }
            set {
                if (age>0&&age<120)
                {
                    age = value;
                }else
                {
                    throw new Exception("age error");
                }
             }
        }

        public Boolean canWork
        {
            get
            {
                if (age>16)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
    }
}

快捷键：输入propfull按tab键