初始化对象的几种情况

1.默认的无参方式

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

namespace DemoInit
{
    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 tastyCurry = new Curry();
            // 默认无参的方式初始化
            tastyCurry.MainIngredient = "A";
            tastyCurry.Style = "B";
            tastyCurry.Spiciness = 8;

            Console.WriteLine("Hello,{0}",tastyCurry.Style);
            Console.ReadKey();
        }
    }
}

2.定义一个构造函数

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

namespace DemoInit
{
    public class Curry
    {
        public string MainIngredient { get; set; }
        public string Style { get; set; }
        public int Spiciness { get; set; }

        public Curry (string MainIngredient,string Style,int Spiciness)
        {
            this.MainIngredient = MainIngredient;
            this.Style = Style;
            this.Spiciness = Spiciness;
        }


    }

    class Program
    {
        static void Main(string[] args)
        {
            // 有参数的构造函数
            Curry tastyCurry = new Curry("A","B",8);

            Console.WriteLine("Hello,{0}",tastyCurry.Style);
            Console.ReadKey();
        }
    }
}

3.使用对象初始化器

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

namespace DemoInit
{
    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 tastyCurry = new Curry
            {
                MainIngredient = "A",
                Style = "B",
                Spiciness = 8
            };

            Console.WriteLine("Hello,{0}",tastyCurry.Style);
            Console.ReadKey();
        }
    }
}

对象初始化器更具有灵活性。

4.进一步结合集合进行处理

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

namespace DemoInit
{
    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)
        {
            List<Curry> moreCurries = new List<Curry>
            {
                new Curry
                {
                    MainIngredient = "A",
                    Style = "B",
                    Spiciness = 1
                },
                new Curry
                {
                    MainIngredient = "C",
                    Style = "D",
                    Spiciness = 2
                },
                new Curry
                {
                    MainIngredient = "E",
                    Style = "F",
                    Spiciness = 3
                },
            };
            foreach (Curry myCurry in moreCurries)
            {
                Console.WriteLine("Hello,{0}", myCurry.Style);
            }
            
            Console.ReadKey();
        }
    }
}