加特性类应用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Threading;
using System.Reflection;

namespace AsncyHandle
{
    [AttributeUsage(AttributeTargets.All,AllowMultiple=true,Inherited=false)]
    class ClassMsgAttribute : Attribute
    {
        public string Msg = "";
        public ClassMsgAttribute()
        { }
        public ClassMsgAttribute(string s)
        {
            Msg = s;
        }
    }

    [ClassMsg("这是包含人类姓名类")]
    class Person
    {
       
        string name;
       [ClassMsg("这是存储人类信息字段")]
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
    }

   
    class Program
    {
      
        static void Main(string[] args)
        {

            //获取加特性类的实例Type
            Type t = Type.GetType("AsncyHandle.Person");
            //获取加在程序集加特性类 的 特性类实例
            object[] objs = t.GetCustomAttributes(false);
            //打出特性类的实例方法
            foreach (ClassMsgAttribute cl in objs)
            {
                Console.WriteLine(cl.Msg);
            }
            //获取类的方法
            MemberInfo[] info = t.GetMembers();
            foreach (MemberInfo f in info)
            {
                object[] bs = f.GetCustomAttributes(false);
                //打出方法的特性类消息
                for (int i = 0; i < bs.Length; i++)
                {
                    if (bs[i] is ClassMsgAttribute)
                    {
                        ClassMsgAttribute b = bs[i] as ClassMsgAttribute;
                        Console.WriteLine(b.Msg);
                    }
                }
            }
        }
    }
}

   

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加特性类应用

原文：http://www.cnblogs.com/xuehaiyiye/p/3572428.html