类的测试

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
  class myclass
    {
        private int intStudentId;//定义字段（私有成员）
        public int _intStudentId //定义属性
        {
            get { return intStudentId; }
            set
            {
                if (value< 0)
                {
                    intStudentId = -value;
                }
                else  intStudentId = value;
            }

        }
        public myclass(string strName)//带参数的构造函数
        {

            Console.Write(strName);
        }
        public myclass()//默认构造函数
        {
            Console.Write("Hello!");
       
       
        }
        public static string GetNation (string strNation)//公有的静态方法（通过类可以访问，不同实例化）

        {

            return strNation;
         }

     

    
    }

    class  TestClass
    {
        static void Main(string[] args)
        {

            Console.Write("My Nation is:" + myclass.GetNation("China"));
            Console.Write("\n");
            myclass annclass = new myclass();
            Console.Write("\n");
            myclass lzlClass = new myclass("lzl");
            Console.Write("\n");
            lzlClass._intStudentId = -100;
            Console.Write(lzlClass._intStudentId);
            Console.ReadLine();
        } 
    }

     

}