using System;

using System.Linq;

using System.IO;

using System.Threading;

using System.Collections.Generic;

using System.Reflection;

public class Program

{

    [Header("Main")]

    public class Cast

    {

        [Option("p1", 12)]

        public string Part1 { get; set; }

​

        [Option("p2", 47)]

        public string Part2 { get; set; }

​

        [Option("p3", 0)]

        public string Part3 { get; set; }

​

        [Option("Min", -1)]

        public int Min { get; set; }

    }

        public static void Main(string[] args)

        {

            Cast cast = new Cast();

​

            MemberInfo element = cast.GetType();

            Attribute[] attrs = Attribute.GetCustomAttributes(element, typeof(Header), true);

            Attribute[] attrs2 = Attribute.GetCustomAttributes(element, typeof(Option), true);

            //не работает

            Console.WriteLine("before: //не работает");

            foreach (var a in attrs)

            {

                Console.WriteLine(a.ToString());

            }

            Console.WriteLine("after: //не работает");

​

            //не работает

            Console.WriteLine("before: //не работает");

            foreach (var a in attrs2)

            {

                Console.WriteLine(a.ToString());

            }

            Console.WriteLine("after: //не работает");

​

            Console.WriteLine();

            Console.WriteLine("===================");

            Console.WriteLine();

​

            //работает

            Type t = cast.GetType();

            Header[] typeAttrs = (Header[])t.GetCustomAttributes(typeof(Header));

​

            foreach (var tt in typeAttrs)

            {

                Console.WriteLine("Header: " + tt.Global.ToString());

            }

​

            //не работает

            Option[] typeAttrs2 = (Option[])t.GetCustomAttributes(typeof(Option));

            foreach (var tt in typeAttrs2)

            {

                Console.Write("Title:" + tt.Title.ToString());

                Console.WriteLine("\t Value: " + tt.Value.ToString());

            }

        }

    class Header : Attribute

    {

        public string Global{get;private set;}

        public Header(string opHui)

        {

            this.Global=opHui;

        }

    }

    class Option : Attribute

    {

        public string Title {get;private set;}

        public int Value{get;private set;}

        public Option(string op, int hui)

        {

            this.Title=op;

            this.Value=hui;

        }

    }

}