c# 类静态字段和静态构造函数->吃饭的你就别过来了,谨防胃溃疡

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

namespace 测试类型静态构造函数
{
    using System;
    using System.Collections.Generic;
    using System.Text;

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


            string result = son0.str0;
            //Console.WriteLine("father:" + father.str0 + "\tson0:"+son0.str0+"\tson1:"+son1.str0);
            //Console.WriteLine("father:" + father.str1 + "\tson0:" + son0.str1 + "\tson1:" + son1.str1);
            //father parent=new father();
            //Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str + "\tson1:" + son1.str);
            //son0 children0= new son0();
            Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str0 + "\tson1:" + son1.str0);
            Console.WriteLine("father:" + father.str1 + "\tson0:" + son0.str1 + "\tson1:" + son1.str1);
            //son1 children1 = new son1();
            //Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str0 + "\tson1:" + son1.str0);
            Console.Read();
        }
    }
    public class father
    {
        public static string str0 = " father str0 静态字符串";
        public static string str1 = "father str1 静态字符串";
        static father()
        {
            Console.WriteLine("开始调用father的静态构造函数");
            str0 = "father class";
           // str1 = "father class";
        }
    }
    public class son0:father
    {
        public static string strSon = "son0内部静态字符串";
        static son0()
        {
            Console.WriteLine("开始调用son0的静态构造函数");
            //str0 = "son0 class";
            str1 = "son0 class";
        }
    }
    public class son1:father
    {
        public static string strSon = "son1内部静态字符串";
        static son1()
        {
            Console.WriteLine("开始调用都son1的静态构造函数");
            str0= "son1 class";
        }
    }
}

输出结果:

 

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

namespace 测试类型静态构造函数
{
    using System;
    using System.Collections.Generic;
    using System.Text;

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


            string result = son0.strSon;
            //Console.WriteLine("father:" + father.str0 + "\tson0:"+son0.str0+"\tson1:"+son1.str0);
            //Console.WriteLine("father:" + father.str1 + "\tson0:" + son0.str1 + "\tson1:" + son1.str1);
            //father parent=new father();
            //Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str + "\tson1:" + son1.str);
            //son0 children0= new son0();
            Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str0 + "\tson1:" + son1.str0);
            Console.WriteLine("father:" + father.str1 + "\tson0:" + son0.str1 + "\tson1:" + son1.str1);
            //son1 children1 = new son1();
            //Console.WriteLine("father:" + father.str0 + "\tson0:" + son0.str0 + "\tson1:" + son1.str0);
            Console.Read();
        }
    }
    public class father
    {
        public static string str0 = " father str0 静态字符串";
        public static string str1 = "father str1 静态字符串";
        static father()
        {
            Console.WriteLine("开始调用father的静态构造函数");
            str0 = "father class";
           // str1 = "father class";
        }
    }
    public class son0:father
    {
        public static string strSon = "son0内部静态字符串";
        static son0()
        {
            Console.WriteLine("开始调用son0的静态构造函数");
            //str0 = "son0 class";
            str1 = "son0 class";
        }
    }
    public class son1:father
    {
        public static string strSon = "son1内部静态字符串";
        static son1()
        {
            Console.WriteLine("开始调用都son1的静态构造函数");
            str0= "son1 class";
        }
    }
}

输出结果:

 

通过这些简单的测试函数 我得到的结论是

第一:在子类的静态字段中,如果这个字段从父类而来,当使用它的时候,不会唤醒子类的静态构造函数

如果这个字段是它自己定义的静态字段,当使用的时候,就会唤醒子类的静态构造函数,可以用一句简单的话来概括

静态字段在所声明的类中 ”全局 “唯一

第二:子类静态构造函数会先唤醒父类静态构造函数

 

 

 

 

 

 

 

posted @ 2013-07-19 18:58  夜莺_yeying  阅读(368)  评论(1编辑  收藏  举报