C#之ref

C#之ref

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

namespace @ref
{
    class Program
    {
        static void Main(string[] args)
        {
            int i = 0;
            TestParm(ref i);
            Console.WriteLine(i);
            string p = "没电了";
            Test(p);
            Console.WriteLine(p);
            Console.ReadKey();
        }
        private static void TestParm(ref int a) 
        {
            a = 9;
        }
        private static void Test( string p) 
        {
             p =p+ "测试";
        }
        private static void Test2(Person person)
        {
            person.name = person.name + "测试";
        }

    }
    class Person 
    {
        public string name { get; set; }
    }
}