如何使用GUID类

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

namespace guid使用
{
    class Program
    {
        static void Main(string[] args)
        {
            man spike = new man();
            Console.WriteLine(spike.id);
            Console.ReadKey();
        }
    }
    class man
    {
       public  Guid id;
        public man()
        {
            id =  Guid.NewGuid();
        }
    }
}