C# Attritube

特性學習

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

namespace ConsoleApp1
{
    class Oyster : System.Attribute
    {
        private string kind;
        public String Kind
        {
            get { return kind; }
            set { kind = value; }
        }
        private uint age;
        public uint Age
        {
            get { return age; }
            set { age = value; }
        }
        public Oyster(string arg)
        {
            this.Kind = arg;
        }

    }
    [Oyster("Thorny", Age = 3)]
    class Ship
    {
        [Oyster("Saddle")]
        public string Rudder;
        public string Kind { get; set; }
        public int Age { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            System.Reflection.MemberInfo memberInfo = typeof(Ship);
            System.Reflection.PropertyInfo propertyInfo = typeof(Ship).GetProperty("Age");
            Oyster hobbyStudent = (Oyster)Attribute.GetCustomAttribute(memberInfo, typeof(Oyster));
            Oyster hobbyName = (Oyster)Attribute.GetCustomAttribute(propertyInfo, typeof(Oyster));
            if (hobbyStudent != null)
            {
                Console.WriteLine("類Student的特性");
                Console.WriteLine("類名：{0}", memberInfo.Name);
                Console.WriteLine("興趣類型：{0}", hobbyStudent.Kind);
                Console.WriteLine("興趣年齡：{0}\n", hobbyStudent.Age);
            }
            if (hobbyName != null)
            {
                Console.WriteLine("屬性Name的特性");
                Console.WriteLine("屬性名：{0}", propertyInfo.Name);
                Console.WriteLine("興趣類型：{0}", hobbyName.Kind);
                Console.WriteLine("興趣年齡：{0}", hobbyName.Age);
            }
            Console.ReadKey();

        }
    }
}

可以試試吧，要求是Ship中必須要有特性類Oyster 中的屬性之類的，這樣才能進行很好的傳遞，即要有Kind和Age，要不會報空，

至於那個Rudder是自己隨便加的擴展，就是可以外加，也可以不加。

關於main函數裏面的那些調用，用到了反射的一些方法。

參考學習網站：

https://blog.csdn.net/FantasiaX/article/details/1627694 //特性 劉鐵錳

https://blog.csdn.net/xiaouncle/article/details/70229119//特性