关于静态成员

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

namespace ConsoleApplication9
{
    class Program
    {
        static void Main(string[] args)
        {
            employee a = new employee();
            employee b = new employee();
            employee c = new employee();
            employee.ShowConut();
        }
        class employee
        {
            public static int conut;
            public employee()
                : this("li", "1")
            {
 
            }
            public employee(string n,string I)
            {
                Name = n;
                ID1 = I;
                conut += 1;
            }
            string name;

            public string Name
            {
                get { return name; }
                set { name = value; }
            }
            string ID;

            public string ID1
            {
                get { return ID; }
                set { ID = value; }
            }
            public void showname()
            {
                Console.WriteLine(this.name);
            }
            public static void ShowConut()
            {
                Console.WriteLine(conut);
            }
        }
    }
}

类中的静态字段或方法只能在程序运行期间实例化一次，上例结果是3