匿名类型anonymous type

匿名类型：

 var curry = new 
            {
                MainIngredient = "lamb",
                Style = "red",
                Spiciness = 1
            };

 

见以下代码：

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

namespace VarDemo
{
    public class Curry
    {
        public string MainIngredient
        {
            get;
            set;
        }

        public string Style
        {
            get;
            set;
        }
        public int Spiciness
        {
            get;
            set;
        }

    }

    class Program
    {
        static void Main(string[] args)
        {
            Curry cur1 = new Curry
            {
                MainIngredient = "Panic",
                Style = "Red",
                Spiciness = 8
            };

            var curry = new 
            {
                MainIngredient = "lamb",
                Style = "red",
                Spiciness = 1
            };

            Console.WriteLine(curry.MainIngredient);
            Console.WriteLine(curry.Spiciness);
            Console.WriteLine(curry.Style);

            var curries = new[] 
            { 
                new 
                {
                    MainIngredient = "Panic",
                    Style = "Red",
                    Spiciness = 8
                },
                new 
                {
                    MainIngredient = "Panic",
                    Style = "Red",
                    Spiciness = 8
                },
                new 
                {
                    MainIngredient = "Soyou",
                    Style = "yell",
                    Spiciness = 2
                },
            };

            Console.WriteLine(curries[0].ToString());
            Console.WriteLine(curries[0].GetHashCode());
            Console.WriteLine(curries[1].GetHashCode());
            Console.WriteLine(curries[2].GetHashCode());
            Console.WriteLine(curries[0].Equals(curries[1]));
            Console.WriteLine(curries[0].Equals(curries[2]));
            Console.WriteLine(curries[0] == curries[1]);
            Console.WriteLine(curries[0] == curries[2]);

            Console.ReadLine();
        }
    }
}

注意：这里显示的属性定义为只读属性，这表示，如果要在数据存储对象中修改属性的值，就不能使用匿名类型了。

1.匿名类型上的Equals()的实现比较对象的状态，如果一个对象的每个属性都与另一个对象的对应属性值相同，结果就是true；

2.==运算符比较对象的引用；（数组中的每一项都引用匿名类型的不同实例）