class1.cs

C#开发教程 由浅入深 配有实例 是初学者的好帮手

using System;

namespace UnsafeStruct
{
    public struct Insect
    {
        private int id;
        private decimal price;
        public Insect(int id, decimal price) 
        {
            this.id = id;
            this.price = price;
        }
        override public string ToString() 
        {
            return String.Format("{0}: {1}", id, price);
        }

        unsafe public static void Swap(Insect* pi, Insect* pj)
        {
            Insect tmp = *pi;
            *pi = *pj;
            *pj = tmp;
        }
    }

    class UnsafeStructApp
    {
        [STAThread]
        static void Main(string[] args)
        {
            Insect i = new Insect(123, 45.67m);
            Insect j = new Insect(890, 98.76m);
            Console.WriteLine("Before Swap:\ti = {0}, j = {1}", i, j);

            unsafe { Insect.Swap(&i, &j); }
            Console.WriteLine("After Swap:\ti = {0}, j = {1}", i, j);
        }
    }
}